F8.17    Book:     Darwin, C. R. ed. 1842. Fish Part 4 no. 4 of The zoology of the voyage of H.M.S. Beagle. By Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

BEAGLE

F8.17    Book:     Darwin, C. R. ed. 1842. Fish Part 4 no. 4 of The zoology of the voyage of H.M.S. Beagle. By Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

the adult state. [page] 164 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F8.18    Book:     Darwin, C. R. ed. 1842. Reptiles Part 5 no. 1 of The zoology of the voyage of H.M.S. Beagle. By Thomas Bell. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

blackish spots. The upper surface of the legs and of the tail is brown with transverse bands composed of black dots. The [page] 6 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

and in all other cases, Mr. Darwin has used Werner's Nomenclature of Colours, by Patrick Syme. [page] 6 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

sinuato, vix denticulato; operculo mucronibus duobus, parvis, subæqualibus, armato; squamis ubique lævibus. B. 7; D. 11/18; A. 3/11; C. 17, c.; P. 17; V. 1/5. LONG. unc. 23 1/2. FORM.—Rather elongated, with the dorsal and ventral lines equally curved, and neither departing much from a straight line. Depth, in the region of the pectorals, equalling rather more than one- C [page] 10 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

M. Gay. Mr. Darwin's collection contains a specimen, which has unfortunately lost the number attached to it; but as he made a collection on that coast, it was probably obtained in the same locality. The description given of it in the Histoire des Poissons, is so detailed as well as accurate, and the figure so exact, that it is quite unnecessary to annex that of the present individual. I may merely observe that the number of simple rays at the bottom [page] 16 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

at least as represented in the figure in the Histoire des Poissons, tom. iii. pl. 56. [page] 20 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

seventh ray, fort petit, but it is very obvious in this specimen, and scarcely smaller than the sixth, as above stated. [page] 24 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

little more than three times in the entire length; when laid back they reach to a vertical line from the fourth [page] 30 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

not very obvious. First dorsal triangular, and moderately high in the point; third and fourth spines longest, about equalling the depth of the body; first spine very small: all the spines rather slender. Second dorsal about half as long again as the first, but the rays are too much broken to judge [page] 46 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

they appear to have been all branched. Anal also long, commencing at about the middle of the entire length, or in a line with the sixth soft ray of the dorsal, and terminating opposite to that fin, to the last half of which, or rather more than half, it exactly answers; only two spines, which are so slender and minute, especially the first, [page] 54 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

Oceans. I [page] 58 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

, with the curvature inwards. In each jaw a single row of very fine, minute, closely set teeth; two small patches on the anterior extremity of the vomer, a band on each palatine, and one on the tongue, all closely shorn velutine. Suborbital, on each side of the extremity of the snout, marked with several nearly parallel dark-coloured veins. Preopercle with the angle very much rounded; the limb broad, [page] 70 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

° 12' S., Long. 36° 33' W., a hundred and twenty miles from the nearest land above water, though shoals were considerably nearer. They do not measure more than one inch eight lines in length; and from their small size, and their not being in a very L [page] 74 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

detailed one of the above [page] 78 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

; but as there is but one specimen, in a very bad state of preservation, and the species inhabiting the Indian Ocean are very numerous, as well as extremely similar to each other, I refrain from describing and naming it as certainly new. I shall therefore merely point out some of its leading characters, so far as they can be ascertained; in the hope that they may prove of use in leading others to identify it who may visit the above Islands hereafter. M [page] 82 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

cinereous grey, which almost every where prevails: there are faint traces of the angulated fasciæ beneath the chin, as well as of three dark stains beneath the dorsal, but these last no longer deserve the name of ocellated spots. Fins, cheeks, and gill-covers, [page] 86 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

and four ventral rays, which so peculiarly characterize the one above noticed. As I feel some doubts with respect to this species being new or not, I have thought it advisable to have it figured, more especially as there is no figure, either of the S. vomerinus or S. textilis, to both which it is so nearly allied. N [page] 90 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

others measure in length from one inch and three quarters, to not quite three inches. The two largest are from the Bay of Islands, New Zealand. The other two have lost their labels: I only presume therefore that they are from the same locality. [page] 94 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

, only half their length, and cut nearly square. [page] 100 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

remaining the same. The depth is about one-fifth of the entire length; the head rather more than one-fifth. The helmet is scarcely so much wrinkled, and the interparietal process not so long, reaching only half-way to the buckler, which last is smaller and less obvious. The solution of continuity of the bones of the cranium appears to extend back [page] 112 ZOOLOGY OF THE VOYAGE OF THE BEAGLE

F9.4    Book:     Darwin, C. R. ed. 1842. Fish Part 4 of The zoology of the voyage of HMS Beagle. by Leonard Jenyns. Edited and superintended by Charles Darwin. London: Smith Elder and Co.   Text   Image   PDF

insertion of the ventrals: the ventrals do not attain to the anal. COLOUR.—Greenish-brown, with about ten conspicuous somewhat oval-shaped dusky spots, arranged in a longitudinal line along the middle of each side. All the fins plain. Habitat, Maldonado. This, which is evidently a new species of Pœcilia, was taken by Mr. Darwin [page] 116 ZOOLOGY OF THE VOYAGE OF THE BEAGLE