Mr. Spence’s Monograph of the Genus Choleva. ~ 153 
Pedes nigri, tibiis tarsisque plerumque nigro-fuscis sive piceis: antici: coxis 
magnis femorum longitudine ; femoribus margine interiori apice constricto ; tibiis 
femorum feré longitudine, validis, clavatis, apice valdé incrassatis s—posteriores : 
femoribus oblongo-ovalibus, margine. exteriori rotundato, interiori subrecto ; tar- 
sis mediis in utroque sexu similibus. 
Var. B. Elytris rubellis. 
Var. y. Elytris pedibusque pallidé testaceis. 
Exclusive of the sectional distinctions which separate this from 
the preceding species, it may at once be known from them, as 
well, indeed, as from all here described, by its oblong-square 
nearly parallel-sided body, transversely acuducted surface, and 
subtruncate elytra. Of these the greatest peculiarity, which, 
however, is not visible but through a powerful lens when the 
pubescence is removed, is the fine, thickly-set, needle-drawn 
strize, considerably analogous to those which are found on Dyticus 
striatus Ent. Brit. which cover more or less the whole surface. 
Another peculiarity which distinguishes this and some of the 
following species from those of the preceding sections, is the 
relative shortness of the fore thighs, which in the former are barely 
longer than the cox& ; whereas, in the latter, they are twice as 
long, or at least half as long again. j 
In size no other species is so variable as this; the largest speci- 
mens being nearly a line longer than the smallest, with indivi- 
duals intermediate. The pubescence varies in regard to its 
tint of colour and thickness. In some specimens the first 
two jojfts only of the antenne are ferrugineous; in others 
the first four or five. In some the feet are wholly piceous or 
testaceous; in others the tibi; and tarsi, or tarsi only. The 
elytra vary from black to piceous, dull red, and pale testaceous. 
No specific distinction can be drawn from any of these varia- 
tions. In the unchangeable attributes of form and sculpture all 
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