188 Mr. G. R. Waterhouse’s Descriptions of 
branous plate having apparently no distinct motion, but being 
connected with a central plate, from the anterior margin of which 
arises a pair of very minute two-jointed palpi, the terminal joint 
being rather the longer and more slender of the two. I cannot 
perceive any distinct upper lip. Now this organization is very 
similar to that of the mouth of many Coleopterous larvae ; but, at 
the same time, it is equally analogous to the structure of the 
trophi of the mandibulated Anoplura, at least in the very few 
which I have examined and dissected ; so that, in this respect, 
we have not made much way towards the solution of the question. 
This structure was observed, as I have said, in a specimen taken 
at large, and not in one actually reared from the eggs of the 
Meloe ; but by the kindness of the Rev. L. Jenyns I have been 
enabled to make a similar investigation of the animals produced 
from the larvae of the Meloe, and I find them identical. 
Plate XV. Fig. 13. Head of the larva of Stylops exserted between the abdo- 
minal segments of an Andrena with the parasites emerging from the front of 
the head, and creeping amongst the hairs of the bee ; 13 a, the parasite 
greatly magnified ; 13 b, b*. b**, the parasites with the legs in different po- 
sitions ; 13 c, one of the legs ; 13 d, e,f, terminal joints of the leg in different 
positions; 13 g, the larva of Stylops, with the parasites visible through its 
skin. 
Fig. 14. The reputed larva of Meloe highly magnified ; 14 a, underside of the 
head; 14 b, parts of the mouth detached ; 14 c, side of the head ; 14d, eye ; 
14 e, mandible ; 14/, maxilla. 
XXXV. Descriptions of some New Species of Exotic In- 
sects. By G. R. Waterhouse, Esq., M.E.S . , Curator 
of the Zoological Society. 
[Read 5th December, 1836.] 
I eeg leave to lay before the Society the descriptions of some 
interesting forms of insects, constituting part of the collection 
brought to this country by C. Darwin, Esq. who has lately re- 
turned after an absence of five years, which time has been spent 
in collecting these and other objects of natural history, in various 
parts of the world. 
Some time since, about January, 1835, I had collected together 
a number of specimens of insects to illustrate certain views relat- 
ing to the analogies observable amongst them. I was however 
obliged very suddenly to leave London, and hence had not an 
opportunity of exhibiting them to the Entomological Society as I 
intended, — and thinking that I might not again be able to collect 
