n in the figure. This is a most remarkable instance of
mimicry, because the beetle has had to acquire so many characters which
are unknown among its allies (except in another species from Java)--the
expanded wings, the white band on them, and the oval scale-like
elytra.[109] Another remarkable case has been noted by Mr. Neville
Goodman, in Egypt, where a common hornet (Vespa orientalis) is exactly
imitated in colour, size, shape, attitude when at rest, and mode of
flight, by a beetle of the genus Laphria.[110]

The tiger-beetles (Cicindelidae) are also the subjects of mimicry by
more harmless insects. In the Malay Islands I found a heteromerous
beetle which exactly resembled a Therates, both being found running on
the trunks of trees. A longicorn (Collyrodes Lacordairei) mimics
Collyris, another genus of the same family; while in the Philippine
Islands there is a cricket (Condylodeira tricondyloides), which so
closely resembles a tiger-beetle of the genus Tricondyla that the
experienced entomologist, Professor Westwood, at first placed it in his
cabinet among those beetles.

[Illustration: FIG. 26.--Mygnimia aviculus (Wasp). Coloborhombus
fasciatipennis (Beetle).]

[Illustration: FIG. 27.
a. Doliops sp. (Longicorn)
mimics Pachyrhynchus orbifae, (b) (a hard curculio).
c. Doliops curculionoides mimics (d) Pachyrhynchus sp.
e. Scepastus pachyrhynchoides (a grasshopper),
mimics (f) Apocyrtus sp. (a hard curculio).
g. Doliops sp. mimics (h) Pachyrhynchus sp.
i. Phoraspis (grasshopper) mimics (k) a Coccinella.

All the above are from the Philippines. The exact correspondence of the
colours of the insects themselves renders the mimicry much more complete
in nature than it appears in the above figures.]

One of the characters by which some beetles are protected is excessive
hardness of the elytra and integuments. Several genera of weevils
(Curculionidae) are thus saved from attack, and these are often mimicked
by species of softer and more eatable groups. In South America, the
genus Heilipus is one of these hard groups, and both Mr. Bates and M.
Roelofs, a Belgian entomologist, have noticed that species of other
genera exactly mimic them. So, in the Philippines, there is a group of
Curculionidae, forming the genus Pachyrhynchus, in which all the species
are adorned with the most brilliant metallic colours, banded and spotted
in a curious manner, and are very smooth and hard. Other genera of
Curculionidae (Desmidop