Origin of Species Variorum

→ mocked another form of 1869 1872

mocks and 1866

→ the Leptalis first 1869 1872

in every case the Leptalis originally 1866

→ happens 1869 1872

arose which happened 1866

→ natural 1869 1872

the principle of natural 1866

→ has recently 1866 1869

and Trimen have likewise 1872

→ other instances could be given with other orders of 1869

other cases could be given with other orders of 1866

Africa, and with some other 1872

→ case of mimicry amongst 1869

instance of mimicry amongst 1866

such case with 1872

→ no such cases 1866 1869

none 1872

→ that 1866 1869

furnished with a 1872

→ hence 1866 1869

which prey on them; hence 1872

occur,

occurred,

and of these one alone

resembles,

resembled

to a certain extent, the common Ithomia of the same district. In another district there

are

were

two or three varieties, one of which

was

much commoner than the others, and this closely →mocked another form of Ithomia. From

many facts

facts

of this nature, Mr. Bates concludes that →the Leptalis first

varied;

varies;

and

that, when

when

a variety →happens to resemble in some degree any common butterfly inhabiting the same district, this variety, from its resemblance to a

flourish-

flourishing

ing and

and

little-persecuted kind,

had

has

a better chance of escaping destruction from

predaceous

predacious

birds and insects, and

was

consequently oftener preserved;— "the less perfect degrees of resemblance being generation after generation eliminated, and only the others left to propagate their kind." So that here we have an excellent illustration of →natural selection.

Messrs.

Mr.

Wallace →has recently described several equally striking cases of

imitation

mimicry

in the Lepidoptera of the Malay

Archipelago

Archipelago,

and →other instances could be given with other orders of insects. Mr. Wallace has also

given

detected

described

one →case of mimicry amongst birds, but we have →no such cases with the larger

animals.

quadrupeds.

The much greater frequency of

mockery

imitation

mimicry

with insects than with other animals, is probably the consequence of their small size; insects cannot defend themselves, excepting indeed the kinds →that sting, and I have never heard of an instance of

such kinds

these

mocking other insects, though they are

mocked:

mocked;

insects cannot

easily escape

escape

by flight from the larger

animals

animals;

→hence they are reduced, like most weak creatures, to trickery and dissimulation.

But to return to more ordinary cases of analogical resemblance: as members of distinct classes have often been adapted by successive slight modifications to live under nearly similar circumstances,— to inhabit, for instance, the three elements of land, air, and water,— we