COLEOPTERA. 133 
distinguished from all the others of this family by the maxillary palpi, 
the last joint of which is much larger and securiform *. 
In the two following subgenera the same joint, also well separated 
from the preceding one, and quite as large or larger, is more or less 
semi-ovoid. These insects are more abundantly disseminated through- 
out the eastern continent, and Europe in particular. 
Timarcna, Meg., De). 
The Timarche, which were formerly placed among the Chryso- 
mel, comprise those which are apterous. Their body is gibbous, the 
antennee are granose, inferiorly in particular, the elytra united, and 
the tarsi usually much dilated, at least in the males. 
These Chrysomeline are found on the ground in the woods, on 
grass, and along the edges of roads. Their gait is slow, and they 
emit a yellowish or reddish humour from the articulations of their 
legs. They are most common in the south of Europe and north of 
Africa. 
Among those in which the thorax is narrowed posteriorly, and 
approaches to the form of a crescent, and generally the largest 
species, is placed, 
De levigata ; Tenebrio levigatus, L. ; Oliv., Col.,.V, 91;1,1], 
From four to eight lines in length; black ; thorax and elytra 
smooth, but finely punctured ; antenn and legs violet. 
Its larvee is greenish or violet, strongly inflated, and has a 
fulvous extremity. It feeds on the yellow Gallium, and under- 
goes its metamorphosis in the earth f. 
CHRYSOMELA, proper. 
This subgenus will comprise such of Olivier’s species as are fur- 
nished with wings, and in which the maxillary palpi, according to our 
previously established subdivisions, have the last joint as large as the 
preceding ones, or larger, and in the form of a truncated, ovoid, or 
reversed cone. Such are 
C. sanquinolenta, L.; Oliv., Ib., 1,8. About four lines in 
length; black, or bluish- black ; sides of the thorax thickened and 
punctured ; elytra deeply punctur ed and widely emarginated ex- 
teriorly with red. Found on the ground in fields, and along the 
borders of roads. 
C. cerealis, L.; Oliv., Ib., VII, 104. Size of the preceding; 
cupreous-red above, with longitudinal, blue streaks, three on the 
thorax and seven on the elytra. Common in France. 
C. popult, L.; Oliv., Ib., VII, 110. Length from five to six 
* See Oliv., Col., V, 92; but we must take away the P. flavicans—Chrysomela 
Slavicans, Fab.—which is a true Chrysomela. See also the Monograph of the same 
genus, but under the name of Nofoclea, published by M. Marsham in the Transac- 
tions of the Linnean Society. 
+ Add the following species of Olivier, rugosa, scabra, lafipes: coriaria, goettingen- 
See also the Catalogue, &c., of Count Dejean: but as I only distinguish the 
Timarche from the Chrysomele by the absence of wings, I am not sure that all the 
species he mentions are in this case, 
sis. 
