~ Pee. 
ki E 
with Descriptions of New Species. 201 
The anterior tarsi of the male are slightly dilated and 
furnished with brushes beneath, as in the margindtus, 
which, in other respects, it closely resembles ; but it is 
a broader and more convex insect, the elevated margins. 
of the elytra are narrower, the interstitial lines are not 
broken into elongated tubercles, and the head is not, li 
plane, but has a rough, elevated, central carina, and an 
. acute, elevated line on each side, above the eyes. 
"The specimens of C. marginatus, Eschscholtz, col- 
lected by Mr. Townsend in Oregon, agree, in most re- 
spects, with the description given by Count Dejéan ; but 
the elytra are dark cupreous, p. cupreo-@neus, or 
(excepting the P scd ; d of the 
same color as th 
vary in size from five to six 
terior tarsi of the males | ive 
together "— the fourth. 
beneath. 
These species, haii differing a good deal from each 
other, are more nearly related in form to Spheréderus 
than to our species of Cychrus ; in which respect, also, 
they approach nearly to some of the European Cychri. 
- Very recently, the * Annales de la Société Entomo- 
logique de France” and the “London Entomological 
Magazine’ have come into my hands. In the former 
of these works,* M. de Laporte, (now Comte de Castel- 
neau) has described a North American insect, which he 
names Spheréderus Niagarénsis, with the following spe- 
cific character ; niger, thorace rotundato, nitide violaceo, 
elytris ovatis, = cupreo-violaceis, costis longitu- 
* vat, p. 390—391 (1832.) 
