NORTH AMERICAN COLEOPTERA. 
43 
111 the males the anterior tibiae have two terminal spurs, the tibiae 
flattened on the inner side and densely silken pubescent. In the 
female the anterior tibiae are not flattened on the inner side and have 
a narrow pubescent line. 
This species belongs to a small group containing Rileyi and cavi- 
ceps, both of which have peculiarly formed eyes limited behind by 
a smooth dejiressed space. This is the only species known to me 
with the eyes oblique and acute above. 
Collected by Mr. W. G. Wright at San Bernardino, Cal. 
E. 9Ierkeliaiia n. sp. — Form slender, piceous, subopaque, not densely 
clothed with short cinereous pubescence, entire head, antenme and legs pale 
rufo-ferruginous. Antenn® filiform ; head punctate, less closely along the mid- 
dle and less densely than the thorax, the median line finely impressed, occiput 
entire; thorax longer than wide, sides feebly arcuate, slightly narrowed at base, 
apical third obliquely narrowed, median line impressed, a little deeper posteriorly, 
surface densely punctulate; elytra closely luinctulate, somewhat scabrous; body 
beneath more shining than above, the pubescence longer, although less dense on 
the abdomen ; legs rather shining, sparsely punctate, scarcely pubescent. Length 
8.5 mm. ; .34 inch. 
This species belongs to the series with filiform antennjp, and in the 
arrangement proposed by me (Proc. Am. Philos. Soc. 1873, p. 95) 
should be placed immediately after trichrus (convolvuli), from which 
it differs in its narrow thorax and pale antennae and legs. In the 
last two particulars it is the only one so formed in the group. 
One specimen from Arizona, probably Fort Whipple, given me 
by Mr. A. Merkel. 
E. lieterodera n. sp. — Oblong, piceous-black, densely clothed with fulvous 
pubescence, varying to cinereous, the thorax of male entirely naked. Antennae 
black, filiform; head closely punctate, median line finely impressed, occiput 
slightly impressed ; thorax broader than long, rather wider in the male, base 
arcuate, sides behind the middle slightly convergent in front and then abruptly 
narrowed to the apex, disc rather flat, the median line distinctly imjtressed ; 
elytra densely punctulate, vaguely bicostate, the pubescence a little denser along 
the suture; body beneath hlack, densely punctulate, vestiture similar to the 
tipper surface ; legs black, less densely pubescent. Length 7 — 9.5 mm. ; .28 — .38 
inch. 
Male. — Thorax smooth, glabrous, suhopaque ; anterior tibiae with two slender 
terminal spurs. 
FletrirtZe. —Thorax densely puhescent, the pubescence much shorter than on the 
elytra, along the basal margin on each side are four puuctiform glabrous fovete, 
which are, however, very indistinct in the smaller specimens. 
In facies this species resembles ferruginea and sericans, although 
with a broader tliorax than either. It is the only species in the 
group with filiform antenme in which the thorax is decidedly broader 
