163 Mr. Sernce’s Monograph of the Genus Choleva. 
the same characters,—because its agreement in general habit with 
the rest of the species of Choleva is too close to make such a 
separation requisite for enabling the British entomologist to 
identify it, when it fails into his hands ;—and, lastly, which 
indeed is the reason that has most weighed with me, because I 
do not possess specimens requisite for the necessary dissection 
and examination. 
The following are the other particulars in which this species 
differs from the rest of the genus. Its head is proportionately 
narrower behind, and not there inserted into the thorax by a 
constricted neck. The thorax is more compressed and narrower 
before; the coleoptra relatively narrower, being no where so 
broad as the broadest part of the thorax; the cox: more glo- 
bose ; and the hind thighs in the male (I know not whether also 
in the female, which I have not seen,) with a tooth underneath. 
In consequence of the greater width of the thorax than of the 
‚coleoptra, the body assumes a narrow obovate shape, the sides 
gradually becoming narrower from the middle of the thorax to 
the apex of the coleoptra. . 
VIII. De- 
