RECORD: Darwin, C. R. 1834.12.-1835.01. Zoological diary: C. Tres Montes. CUL-DAR31.289-304. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Richard Darwin Keynes in Zoology notes (2000, F1840). Revised and supplemented here by Christine Chua to correspond to the manuscript images. Edited by John van Wyhe 6-7.2022. RN1

NOTE: Original transcription reproduced with permission of Richard Darwin Keynes, the Syndics of Cambridge University Library, English Heritage (Down House Collection) and William Huxley Darwin.


289

C. Tres Montes

1834 Decemb:

Planaria (2440) Found within the quite soft rotten wood, on a high hill within the Forest in St Andrews Harbor, C. Tres Montes; Lat. [not filled in] This is the furthest South I have seen this curious genus, & it is singular that this should be the largest sized species I have ever met with.— When closely contracted 1.4 inch long & .4 broard, posterior extremity very obtusely rounded.— When fully crawling length 5 inches, breadth .13.— I could distinguish no eyes.— Orifices on under surface obscure.— Almost killed by being placed to crawl on paper for a few minutes.— Colors; above "umber brown" with darker narrow medial line: narrow edges pale brown, bordered with the umber brown.— Beneath pale brown

Dyphyes PL. 15 Fig. 1 Caught in day time in harbor, C. Tres Montes. quite colourless, transparent.— length 1/5th, breadth 1/12th (therefore drawing rather too broard). Body flattened; outer envelope sharply conical; on right half of body, we see within a sack, of which the sides appear very thick; the mouth can be closed at will by horizontal membrane; the bottom of the sack appears to be double, as if termin dividing into two. The outer envelope projects on right hand corner; on the left is occupied by a solid square promontory, the sides of which & terminal edges are concave; this square; this is occupied by a sack, containing an ovary? to the base of this Ovary there is attached a cylindrical vessel, containing another interior one, which slightly enlarges, near extremity suddenly contracts, forming a little bag.— In all the specimens which I saw bubble of air was contained in the inner tube & a strong circulation might be seen, sometimes performing whole length, at others revolving in shorter distances; the particles had as well as progressive, a revolving motion; this vessel enlarges into what I have called the ovary . This when contracted appears like a bunch of opake little paps. can

290

C. Tres Montes

1834 Decemb:

Dyphyes be extended, even to mouth of sack (A).— When in this state is seen to consist (z) of a tortuous vessel, bearing alternate little blind guts filled with granular matter, their footstalk is surrounded by small globular-mass of points.— These blind-guts appear less developed, at basal parts of vessel.— the air from the long vessel circulates through this ovarium vessel.— In quite young specimen, this part was but little developed, but otherwise similar.— The quadrangular projection blends its figure, with the flattened cone gradually, the lines of angles may however be traced to the very apex: in a like manner, from (B) where the keel CD joins on, to a line of projections on each side (or ridge) is continued to apex (D).— The animal moves by starts, quickly by the contraction of the left rt hand part of Sack; water is expelled & animal proceeds apex foremost.— Could also revolve itself.— Quickly perceived & avoided the approach of any body in the water: swam high or low in a glass.—

Equorea PL. 15, F 2 Diameter .6 to inch & some smaller; colourless except end the red tentacula on edge of ombrella.— Locality &c same as above.— Drawing represents the animal laid on its back & fully expanded. The tentacula are about 1/3 diameter, are placed so as to touch at their bases in the whole circumference; arise on the dorsal edge so that the veil (F) is within them (seen in the supposed section). The tentacula at base can be seen to contain inner vessel, these open into a space or vessel which surrounds the whole ombrella.— the tentacula taper to point, are adhæsive, red-colored.— In centre of body in dorsal parts, five very delicate vessels unite, without forming any sack; these bifurcate & become enveloped in

[290v]

PL. 16 Fig. 1 [annotated sketches]

291

C. Tres Montes

1834 Decemb:

Equorea a thicker covering & so pass (10 in number) into the space on vessel (D) which surrounds ombrelli.— Above (as animal now lying) the exterior half of these spokes, there is a sinuous thick fold, which appears an enlargement of the vessel & contains granular matter, is probably an Ovarium.— Close to where the bifurcation takes place, there is a mouth formed of a sinuous fold which is intimately connected with the envelope of the spoke-like vessels; there are about 20 zig-zags; the bend of each fold being attached alternately above the vessel & in the interval between two.— Exterior to this there is a delicate scalloped veil.— No doubt, when the animal is well & swimming the body assumes the form represented in section, where one tectaculum on each side is seen.— I have said from very centre of body 5 delicate vessels branch off & bifurcate; this would appear to be normal; but sometime six meet, & one will trifurcate, in other instances bifurcate.— There was a rapid vibratory circulating motion within the base of of tentacula, circumferential space & spoke like vessels & it extended even in the zig zig folds which form the mouth.— (It may be doubted whether this is a mouth.—) Both this & the previous animal caught several yards beneath the surface, the weather being bad.—

Nudibranch (1106) PL 16 Fig 1 Locality same as last animal C. Tres Montes, Chonos Archipelago, 13 fathoms.— Length when extended one inch.— body very narrow, mantle not surpassing the foot.— tail very much & abruptly pointed; body slightly tapering towards the head; back convex. Mouth protected in a longitudinal fold of the mantle, circular, can scarcely be said to be seated on a proboscis.— No labial tentacula; anterior extremity truncate:— Dorsal tentacula two (there are no more), seated

292

C. Tres Montes

1834 Decemb:

Nudibranch near extremity of body: rather small: pointed club-shaped pectinated (no hole at extremity), with transverse waving plates or folds (as in Doris). These antennæ at their bases are enclosed in a case; which on the two 2/3 of its exterior margin expands out into a saucer, the edges of which are indented with about 8 points.— (B) shows this saucer & case with the tentaculum: The inferior part or footstalk of the case is alone retractable: the tentacula are withdrawn through the case.— But neither these or the Branchiæ are withdrawn, from irritation, for more than 1/2 a second. Half way between these Tentacula & Branchiæ & half way between foot & back on rt side there is a closed orifice: in death a double tubular organ was protruded to the length of .1: this tubular organ (c) consists of two tubes with orifices, united at base.— i.e. organs of generation. The Branchiæ are seated in very middle (in each sense) of back; consist of five trees; each tree (D) is subpectinated & like a fir: (D) represents back view; every line is curved towards the anterior surface, & these lines are the back edges of curved plates; so that the view in front would show a number of plates passing directed towards each other as represented. The trees are placed in a circle; towards the after part of the ring there is a tubular projecting anus.— fæces oblong, refuse of minute Coralls.— A little posteriorly to the Branchiæ, & a little exteriorly to them, there are two cylindrical, obtusely ended, tentacula-like organs rather longer than Branchiæ.—

These as well as Branchiæ are only slightly retractile. They do not appear tubular, & have no orifice; their use I am quite ignorant of.

Within the body & a little posterior to Branchiæ there is a large white opake reticulated organ. anterior to this & close to dorsal surface the heart could be seen pulsating. Both these are drawn in. Body white, singularly transparent: scattered over whole surface there are circular & oblong regular marks 1/30th to 1/40th

[292v]

(a) Are rather longer than Branchiæ: little more than 1/10th.

293

C. Tres Montes

1834 Decemb:

Nudibranch of inch in diameter, color dark brown, not placed quite symetrically 5 to 6 times their own diameter apart. Spirits of wine partially removed these spots.— The saucer-like case of Tentacula: the Branchiæ, excepting the very tips: & central broard band in the two posterior cylindrical organs (top & base white): & narrow margin at very extremity of tail, bright orange. Hence very pretty animal.— Foot narrow, can not adhære to flat-surface, excepting by the tail & anterior extremity, both of which are rather dilated: immediately adhæres to sea-weeds: often floats, back downwards: with edges of foot applied to each other for its whole length, so that body is a perfect cylinder: frequently adheres even to sea-weed (or needle) only adhæres by foot.— Evidently adapted to crawl on Fuci & its habits beautifully agree with its living on small microscopic parasitic Flustraceæ, or (I know the species) rather Cellaræa (which in itself is curious fact as mostly these animals are herbivorous).—

The stomach should have some bony structure or teeth.— This animal is allied, especially in habits, to the Molluscous one of Rio (P.46).— Comes nearest to Scyllæa.—

Doris 1108 (b) Same Hab & Locality: 2 Species, the larger one2, pale yellow, with irregular brown spots, perhaps same species with that of Page (284).— The smaller specimen is different, but agrees in many respects: color bright yellow: smoother to the touch: mantle does not much surpass the foot: body more oblong & convex.— The chief difference lies in the Branchiæ, which here consist of ten, small, delicate, brush-like tufts; these are closely & finely subdivided.— Length .6 to .7.— The Branchiæ have only seven principal divisions

[293v]

(a) Its tail gives it the power of crawling like a Caterpillar from twig to twig: can probably swim well:—

(b) The Branchiæ however only have 7 principal divisions

294

C. Tres Montes

1834 Decemb:

Tubularia 1107 PL. 16 Tubes generally grow separate & distinct. same Hab & Local (tidal rocks as before): Each tube about 1 to 2 inches not branched high: terminal polypus dark rose-color, not in the least retractile. Consists of a base, from

Fig 2 & 3.— which spring 16 long (.15 in length) tapering tentacula, are tubular within granular substance but only to be seen (tubular structure) in some specimens: These tentacula enclose, a pointed oval opake mass, which terminates in Mouth & Anus (for I saw small globular red fæces ejected). At about the middle of the oval there is a another ring of short cylindrical tentacula; 24 in number, but only 1/3d length of the others. When the animal is at rest, the outer tentacula are curled backwards like petals of a flower; whilst the short ones enclose the cone or mouth.— A Section is shown at Fig 3.— The stem consists of an outer coriaceous case, enclosing another vessel; this near to the Polypus contracts very much; is narrow where they it joins the transverse base, leaving however a joint like appearance.— This neck is strengthened by a sinuous mass of gelatinous elastic substance, which appears a continuation transmutation of the coriaceous covering.— Within the inner vessel there was an appearance of 4 or 6 ligamentous bands.— The inner vessel contained red granular matter & passed on to the cone.— The animal when touched covers itself with the outer tentacula, but does not otherwise move; if the head is moved recovers its position.— When taken out of water, Polypus droops, the neck of stem bending.— the neck contracts if vessels are emptied of their fluid.— Probably owing to elastic action of the ligamentous bands or surrounding jelly.— Polypus cannot be said to have any case or receptacle. Is allied to the Tubularia Clytia P 245 of S. Cruz; through which a connection is

[294v]

(a) traced with Clytia; as shown by the numerous granular tentacula placed in one or more rows; the more or less projecting mouth, the non- or imperfectly retractile polypus its simple structure; the immediate connection with living axis of the stem.— The S. Cruz species quite unites the two others, possessing the pseudo-jointed structure of stem, & small cup of the Clytia; the enlarged oval, non-retractile body of this Tubularia; & lastly differs from both in the many rows of tentacula.

295

C. Tres Montes

1834 Decemb 29th

Planaria PL.17:F.1=5 (2457) (b) Found under stones in tidal pool, Ynche2 Isd.— Body excessively depressed, edges very thin: broard in proportion to length, which is .55, broardest part .3 which is almost at the anterior extremity; tail close to tip .1 broard; hence three times broarder in front than behind.— Color pale tile red, darkest on the ridge, with white narrow space over the posterior orifices & transversely oblong space where eyes are seated. These consist of black circular points, which are seated in two groups & also form two bands which are inclined to each other (Fig 2): it is to be remarked these latter are more deeply seated in body, near to inferior surface, than the circular groups. (Fig 1) shows the animal with inferior surface turned upwards; there is a circular clear spot, beneath where the eyes are; into this all the vessels from anterior part of body join. I must describe these vessels.— If we imagine, a thin cake of granular matter, which becomes coarser towards the centre, traversed by transparent lines or lines of division, which continue generally tri= bifurcate 3 times before they reach the margin, we shall understand the appearance.— The black lines in my drawing Fig 1 represent these clear lines; so that it is hard to say which are the vessels, the granular matter or the lines, I suppose the latter, because they join into a clear spaces such as that under eyes & round the central organ. The embourchure of the lateral vessels can hardly be distinguished.— Down the centre of body a white opake body vessel lies, which throws off on each side regular buds, which narrow off (as drawn) to point, on each extremity. When dying two orifices were widely opened over this organ, one anterior & the other rather posterior. These orifices closed so completely, that excepting when in the act of

[295v]

(a) In the dying animal, I noticed something like a rapid circulation of particles over the clear space, as if there was an aperture & currents of water flowing through it

(b) The specimen is only in Fragments V the number

296

C. Tres Montes

1834 Decemb:

Planaria opening I could never perceive them. Through these two orifices two cups were protruded; they differed from the general sort in being very shallow, more like saucers & margins narrow.— By dissection I procured the two organs separate from body (as in Fig 3).— (like lace round a cap) the margin was very sinuous & thin; this fringe is narrow; it seems to contain a sort of vascular system, somewhat similar to that of the body: is transparent, retains vitality & motion long after rest of body is dead; when pursed up, is very complicated from number of folds & like the section of a bud of flower.— in act of pursing up These two Saucer like organs touch each other & the [3 words illeg] When folded up in body, they produce the elliptic tree-like appearance described.—

This central line is surrounded in form of ellipse by an enormous number of small spherical bodies, arranged in packets of 2 to 4 each (in drawing I have only represented 2). By dissection these dropt loose; are sphærical with central opake mass (Fig 5): has diameter 3/500th of inch: are manifestly eggs.— In dissecting the granular vessel-like masses in tail of body, it seemed full of partly-formed ova.— hence we must suppose they are matured all over the body, pass into the elliptical space, & from thence, probably, by the anterior orifice to open water.— In the drawing a double fork will be seen almost covering in posterior half the line of ova. This consists of chain of minute white opake bodies, partly or not united; the lower extremities of outer fork blend with the external vessels; the upper bends to form inner fork, which terminates abruptly: Has this arrangement any connection with the maturing the ova: the forks do not appear connected with the lateral vessels:

297

C. Tres Montes

1834 Decemb:

Planaria Just at the termination of fork, there is a small orifice & again close beneath this another.— I am certain, from having seen them with high & low power, reflected & transmitted light.— that there are four orifices; two which emit the membranous saucers & two simple corresponding ones, the use of which I have never known4.— Much as this species differs from others; yet the arrangement of vessels is almost similar in collecting in anterior ring in place of straight lines & from thence dividing into two lines, between which the cup-organ is placed; the ova are placed at the base of the lateral vessels. The forked arrangement of white opake matter is the most novel part.— & the doubling the common orifices.—

The animal crawls very quickly & adhæres firmly to stones: can swim well by action of thin edges of body; dissolved in fresh water from death, like butter in the suns rays.

Animal (1112) (a) PL 17, Fig 6-7-8.— allied to Lucernaria?

Consists of an irregular globular hollow semi=gelatinous nearly transparent body, on a footstalk, which like an Actinia firmly adhæres to sea-weed.—

(Fig 6) Seen with the back (A) in front. two short cylindrical branches, of unequal length, these have no orifice & are crowned by very numerous un-retractable papillæ, which terminate in a nob.— Seen laterally (as at F 7) these are seated on one side, in front of them & at their bases, there is a large orifice, which open into the inner tunic of sack: this great orifice is surrounded by numerous white, long delicate tentacula; & at the base of the branches is partially closed by a thin membranous moveable tongue.— The inner tunic of sack sends passes up

[297v]

The consistence of body is much that of some of the small transparent Actiniæ.—

298

C. Tres Montes

1834 Decemb:

Animal into both branches.— These branches viewed from in front (B), instead of being cylindrical in whole circumference consist of two projecting longitudinal folds (Fig 8) which contain sphærical bodies (perhaps Ova?).— These are best seen in the larger branch, where the Ovary passes down into the sack.— Between the two branches & externally there is small white body on footstalk (Fig 6), with mark of orifice. Is not this a gemmule? Or young branch? — I should have said the branches (they ought not to be called so) are connected, up to some height.— The animal when touched near great aperture of sack doubles both are branches over so as to protect it: the papillæ, an summits of branches are moveable irritable; the tentacula round aperture adhæsive.— Footstalk contractile (?).— (Fig 6) stands .4 high.— Colored dirty "Art Blood R".— What tribe does this animal belong to?

Planaria (2458) (a) Under a stone (on land) in Isd of Ynche, N. of C. Tres Montes: Above "Greenish Black" with minute white punctures; down centre of back two bands of "Gallstone yellow" separated by a narrow space.— On anterior extremity four such bands; the two external ones soon dying away.— Anterior extremity (with row of eyes on margin?) Beneath leaden color, with two white spaces in posterior part with orifices.— Body convex.—

Bufo (1118:19) Copied Back pale "Chesnut B" with three longit bands of "Gamboge yellow" edged with black; marks of do on legs & on greenish sides. Under jaw "primrose Y", belly do with rings of black, or may be considered as black removed with very numerous circular yellow patches: Feet & very base of belly orange.— The stripes of Yellow often are irregular & become five in number.

[298v]

Feb: 1835 2554 (a) Planaria. taken in the Forest of Baldivia: When crawling 1.7 or .8 long. breadth pretty uniform about .2: edges of body thin: Upper surface jet black, with numerous minute, oblong, variously sized spots of yellow.— under surface mottled white & black: Cup is protruded in the specimen.—

299

C. Tres Montes

1834 Decemb: Copied

Bufo Are exceedingly abundant all over the clear (from trees) damp mountains of Granite, "Anna Pinks Harbor4" or Pastel Harbor: crawl about actively during day time, & make noise like Englishman does to encourage horse.— When first touched, many close their eyes, arch their back & draw up their legs (as if spinal marrow was separated) I presume as an artifice.— They are chiefly remarkable from the curious manner of running, like the Natter Jack in England & scarcely even jump: neither do they crawl like a toad, but run very quickly.— Their bright colors give them a very strange appearance.— Abound at an elevation from 2000 to 3000 500 to 2500 ft.—

Rana (1120) From same great height & Locality, beneath a stone: on centre of back, strong tinge of grass green which shades on sides into a light yellowish brown.— Eyes very large. Iris coppery.—

Rana (1117) Same Locality, but base of mountain.— above pale rust color, with obscure dark angular shadings.— Band of fine Chesnut B, reaching from nose, cross eyes & over the Tympanum.

Cassiopœa? PL 18 Fig 1-3 Common on all this coast; caught several feet beneath the surface. Fig 1. shows a section as in the water: diameter from edges (laid flat) 3.7 of which the margin on each side is one inch; the centre is an very oblate sphære, short diameter 1.1.— The margin thins to an edge & is recurved; from it a very narrow veil (BB) depends, outside of this are numerous tentacula (the structure of which is double) length .4; these however does not appear constant in all specimens: the convex surface is slightly depressed on margins with numerous lines; which probably are connected with the contractions of the Margins EE, by which the

300

P. Tres Montes

1835 Jan 1st

Cassiopœa animal possesses a limited motion: the outline of centre of crown back (C) is marked with slight irregular depressions something like a crown.— On the concave surface (HH) of the Margin there are very numerous semi-opake superficial vessels.— The animal seen on its from above shows appearance like Fig 2. The central oblate sphære being quite transparent.— These vessels are generally simple, sometimes they bifurcate & even trifurcate.— They terminate in the circumferential space from which veil depends & tentacula open into.— they arise in a delicate membrane which partially coats under surface (D).— I do not know how much is coated; for in all the specimens it was ruptured: I could make out that it must have been bordered by the sinuous veil & is highly irritable with motion, which probably depended at about (KK). These vessels are in short nothing but the membrane divided into numerous rays, & these have their edges united to the concave surface: Those vessels near to edge expand into small folds containing granular matter which hang down stand out (mm).— There are from 16 to 20 of these vessels (or ovaries) in every inch of circumference: yet I believe the tentacula & the external ribs of depression are more numerous.— The external veil (BB) is very narrow, is composed of very numerous parallel concentric fibres, towards base it has a reticulated structure: in the space, where tentacula & ovaries terminate, between each tentacula there are 3 or 4 little oblong capsules, each of which contains what appears to be two minute regular bubbles of air. Fig 3. And with dorsal of around above them in the space there is a complicated circulation of particles as if there were dozens of distinct on centres of motion.— Animal quite colourless, transparent. I could not with high power perceive the slightest

301

P. Tres Montes

1835 Jan 1st

Cassiopœa organization in the oblate sphære.— The margins when rubbed by fingers, phosphorescent with bright green light.— Could not perceive Sulp: of Magnes. had any effect on this appearance.— It is manifest this animal has same structure with Equoræa P 290.— I so called it there because I thought the internal veils formed a mouth.— In this case they cannot be said to do so; so that I am in doubt about the truth.—

Echinoderm sans pieds(1122) PL19, F1. .3 I found two individuals adhæring to the under surface of the foregoing Medusa.— Fig 1. Animal consists of an inverted funnel-shaped body which rests on [illeg] a circular fleshy disc.— This disc, close to its edge is surrounded by 12 equal, short cylindrical, obtusely rounded terminated dorms or paps [illeg] shaped as Fig 3.— The under surface of disc is mammillated, & has the power of adhæsion (of no very great power) in which manner the animal is fastened to the Medusa.— in the centre is a large irregular mouth.— Fig 2 is a section.— The stem or tube of funnel is terminated by small orifice, hence animal is open at each extremity: The funnel is lined by a double another tunic; the little dorms have no aperture, are lined with same tunic as funnel into which they directly open.— 10 or 12 lines proceed from margin to apex; perhaps these are of a ligamentous nature.— The inside of Body is filled with narrow intestines & a sort of fold or blind guts imbedded in reddish granular matter.— could find no sort of teeth.—

(a) The animal distends itself with water, when then the tube is erect & the 12 little dorms become nearly transparent & stand distended & separate (like ornaments round a crown). This is when animal is at rest; when molested, funnel shrinks, become striated longitudinally & some if not all of the dorms are contracted, when their inner tunic shows

[301v]

(a) I presume the distention with water is owing to a process method similar to that in Holuthuria.— The animal is not very irritable.— Its usual position must be upside down with respect to the drawing, because it adhæres by its disc to under side of Medusa.—

302

P. Tres Montes

1835 Jan 1st

Echinoderm sans pieds itself more clearly & contain red granular matter. When at rest stood ½ inch high. color "Aurora Red". Body quite smooth, soft flexible (molluscous).—

The animal is evidently parasitic & belongs I apprehend to the family which the margin shows.— During the dissection I noticed that all the granular matter (at least I am sure of that in the dorms & in the blind guts) possessed a rapid revolutionary motion; it is similar to what has been described in Virgularia of B. Blanca; the instant a mass of granular matter was broken, each little detached piece of whatever figure shape began to revolve.— the largest which I noticed was 1/100th in diameter & quite irregular in outline.— There could be no mistake: from the motion of the ship (in harbor) all loose particles vibrated from side to side, then quickly revolved on various axises & even progressed.— the more minute particles revolved the quickest: This power lay chiefly if not entirely in the reddish granular matter.— The field of view in Microscope appeared enchanted.— I cannot imagine what causes this motion; or what temporary organ[s] are thus employed.—

Equorea PL. 19, Fig 4-6.—  Diameter of disc .6 to .1 in diff specimen; convex above, concave beneath: section like that of young moon. On edge or Umbrella a narrow depending veil, outside of this, there are 16 tentacula long tapering, which arise from a semicircular sphærical nob, & this opens into a circumferential vessel.

This nob contains an inner tunic with red granular matter.— hence, the rest of animal being colourless, appearance in water is that of a moving ring of red dots.— Between each pair of these tentaculiferous paps, there is a lesser, but similarly organized one; hence in

303

P. Tres Montes

1835 Jan 3d

Equorea all 32 in number (Fig 6.) — In the concave disc there are four delicate vessels (Fig 5), which at exterior extremity open in circumferential vessels; & before this expand for short distance into a sinuous depending fold, which contains an inner tunic with opake granular matter (c): in this I could see a motion, also in circumferential vessel:— Near to where these vessels cross, they become thicker, are slit open on under surface; hence form a cruciform slit in centre of concave disc. This cross is surrounded by a membrane, with thin sinuous edges; the base of which appears like an expansion of the outer tunic of the four vessels. This membrane depends; & can contract itself or expand (as shown in F. 5). When contracted it is clewed in on four points & something resembles F 4.— the Cruciform slit being still preserved.— In Fig 5, the outline B only is supposed to show the thin edge of the membrane when expanded.— I am quite at a loss to know whether to consider this a mouth or not. The slit is superficial.— Animal abundant, caught by night beneath surface of water; evidently allied same structure with the last Equorea & Cassiopœa.— Only then It did not notice appear that the ovaries in centre were slit open.—

Holuthuria (1125) Hab: as above, "Patch Cove" (13 Fathoms): when contracted egg-shaped; length 1.7, breadth 1.1.— When at rest more than 3 inches.— Surface quite smooth to the touch, colored "Ochre & Gamboge Y". When at rest anus pointed; anterior extremity flat truncate, surrounded by 10 tentacula.— tree-like, excessively long & tapering (1.4 length). Consist of tapering cylindrical stem, which throws off (at ∠° 45°) on all sides at regular but distant intervals, branches. These send off

[303v]

(a)] Branches as in a tree, decrease in size towards the top: very base of tentacula almost void of branches.

304

P. Tres Montes

1835 Jan

Holuthuria in similar method other branches, which on each side are studded with little points.— Besides these regular branches, each tentaculum near base sends off a great branch.— Tentacula colored orange: truncate space in which mouth lies, purplish; edge margin of mouth deep reddish orange.— Body with 5 bands of papilli; each of these properly has 2 rows, but sometimes they are irregular & contain more.— Papilli, very long, when fully extended .4 in length.— Slightly tapering, terminated by a concave (adhæring) depression & no orifice; but when one is squeezed there appears to be a faculty of transudation, therefore perhaps of absorption; the interior under Beneath the surface of the Saucers, there is an irregular strong transparent fine net work; apparently for the purpose of strength.— This reach also encircles the upper part of footstalk; the stony vessel-like lines being in this part chiefly concentric, so as perhaps to allow contraction & protrusion.— Two of the bands of papilli are imperfect: the papillæ, being few, very small, & pointed, when retracted scarcely to be seen; They have however the stony net work, but not the terminal saucer.— Close to anterior extremity, on these bands the papilli are numerous & long, but yet pointed.— It is singular, that this should be (the side with imperfect bands) the adhæring surface: the animal however can well adhære by the 3 perfect bands.— It appears as if the two had been removed by attrition.— Habits, ring of contraction passing down body &c &c like others of the genus.—


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