INSECTA. 
552 
The first of these genera, — 
CnYPTOCEPHALUS, — 
Is composed of Chrysomelinae in which the head is inserted vertically into a swollen thorax like a hood, so that 
the body, generally in the form of a short cylinder, or nearly ovoid, and narrowed in front, appears from above to 
be truncated and deprived of a head. The antennae in some are more or less serrated or pectinated ; in others 
they are long and filiform. The last joint of the palpi is always ovoid. 
In some the antennae are short, pectinated, or serrated after the fourth or fifth joint. 
Clythra, Fabr., has the outer margin of the elytra straight, or with but a slight notch ; the posterior angles of the 
thorax are rounded and not arched, and the anterior are not indexed beneath. The body is always in form of a 
short cylinder ; the antennae are always free ; the eyes entire, or scarcely emarginate. The males have the head 
generally large, with the mandibles large and porrected, and the fore-legs long. C. quadripunctata, Linn., [a 
common British species]. Its larva lives in a coriaceous kind of tube, which it bears about with it. 
The following differ in having the elytra much dilated externally at the base, with a deep notch. The posterior 
angles of the thorax are acute and arched, and the anterior are greatly inflexed. The eyes are often notched. 
These are peculiar to the New World. 
Chlamys, Knoch., has the body short, cylindric, or cubic, and the surface of the body is very unequal. [See the 
monographs of Klug and Kollar.] 
Lamprosoma, Kirby, has the body globular [and very smooth]. 
In others the antennse are evidently longer than the head and thorax, simple, filiform, or thickened to the tips. 
Cryptocephalus, Geoffr., has the body cylindric ; the thorax as broad as the abdomen, and the antenna and palpi 
of equal thickness throughout. C. sericea, Linn, [a common British species. The genus is extremely numerousj. 
Choragus, Kirby, has the antennse terminated by three large joints. C, Sheppardi, [a small British species. 
This genus is more allied to Anthribus and Bruchus.] 
Euryope, Balm, (having the mandibles very strong, and the second joint of the antennae longer than the 
Eumolpus, Klug (with the mandibles of ordinary size, and the second joint of the antennae shorter than the third), 
differ in having the body narrowed in front and nearly ovoid. 
Eumolpus Vitis, a small continental species, does much injury to the vine. This genus passes, by means of 
Colaspis, in a very gradual manner, to the genus 
Chrysomela,— 
In which the body is generally ovoid or oval; the head exposed, advanced, or slightly inclining forwards; the 
antennae simple, about half the length of the body, and often moniliform and slightly thickened to the tips. 
Some, having the body ovoid, or oval, and winged, and the palpi pointed at the tips, approach Eumolpus, and 
are distinguished from all the following by the filiform antennae, longer than half the body. 
Colaspis, Fabr., has not the mesosternum pointed. [A very numerous exotic genus.] 
Podontia, Dalm., has the mesosternum produced into a short conical point. [Exotic insects.] 
In the following Chrysomelinae of the same tribe the antennae are shorter, and composed of reversed-conical 
joints, or more or less moniliform, and thickened to the tips ; the false joint, or appendage, at the end of the last, 
is very short, and scarcely distinct. 
Some have the maxillary palpi thick, and truncated at the tip. 
Amongst these some have the two terminal joints of the palpi united into a truncated mass, the last shorter 
than the preceding, and either transverse or in the form of a short truncated cone. 
Phyllocharis, Dalm., has the mesosternum not pointed. [Exotic species], peculiar to New Holland and Java. 
Doryphora, Illig., has the mesosternum pointed like a horn. Composed of South American species. 
Cyrtonus, Dalm., composed of two Spanish species, has no mesosternal point, but the joints of the antennae are 
longer, the body more globose, and the thorax more elevated transversely. 
Apamcea, Leach, is allied to Doryphora, but has the antennae of the male 8-jointed, the last two forming a club. 
ITrochalonota, Westw., is also globose. Type, Chrysomela hadia, Germ. South America.] 
Paropsis, Oliv. {Notoclea, Marsh.), is peculiar to New Holland, and is distinct by having the last joint of the 
maxillary palpi hatchet-shaped. [See the monograph on this genus, published by Marsham in the Transactions of 
the Linn<ean Society of London.l ... ... 
In the two following subgenera the same joint, quite distinct from the preceding, and as large or larger than it, 
is more or less semi-ovoid. These insects are widely distributed over the Old World, and particularly Europe. 
Timarcha, Meg., is composed of apterous species, having the body gibbose ; the antennse moniliform, especially 
towards the base ; the elytra united together, and the tarsi very dilated, especially in the males. These insects 
are found on the ground in woods, upon turf, and low herbs at the sides of foot-paths, crawling slowly, and emit- 
tino- a yellow fiuid from the joints of their feet when disturbed. They especially inhabit the south of Europe, and 
the”" northern countries of Africa. Amongst those which have the thorax narrowed behind, and nearly of a 
crescent-shape, and which are the largest of the tribe, is the {Tenehrio) Uvigatus, Linn, [a common British species], 
from four to eight lines long; black, with the thorax and elytra smooth, finely punctured, and the antenn* and 
feet violet-coloured. Its larva is green or violet-coloured, very swollen, with the extremity yellow. It is found 
on the Lady’s bed-straw. It undergoes its transformations in the earth. 
Chrysomela proper, comprises those species of Olivier which are furnished with wings, and in which the maxil- 
lary palpi, according to the subdivisions established above, have the last joint as large as or larger than the pre- 
ceding, of an ovoid-truncate or conic-reversed form. Such is 
