NORTH AMERICAN COLEOPTERA. 
239 
feebly clavate, uot toothed ; tibia* a trifle widened toward the apex, each tarsal 
Joint with a few, white hairs arising near the apical extremity, claws armed with 
a very small, almost imperceptible tooth. Long. 1.8 — 2.2 mm. ; .07 — 00 inch. 
Hub. — Florida, North Carolina. 
The following variety deserves special mention : Larger and 
darker; frontal fovea sulciform, deeply impressed; the scaly vesti- 
ture more consjiicuous ; scutellum, scntellar and intra-humeral sjiots 
very densely scaly. Long. 2.7 mm.; .11 inch. Occurs in District 
of Columbia, Florida, Texas, Pennsylvania. 
Subgenus Cnemocyllus. 
Under this subgeneric name I have included all those species 
which have the posterior tibite dissimilar in the two sexes, those of 
the male being more or less curved, while in the female they are 
straight, or nearly so. This curvature varies greatly, being most 
marked in ornatulus and figuratus, and least in Ugatns. The fifth 
ventral segment is more or less elongate, except in sabvittatus, or- 
natulus and jiguratus, and very long in inermis. The tarsi are never 
short and broad, but are very long and slender in a few sj)ecies. 
The tooth of claw varies considerably in development. The form 
varies from oval to elongate, and the integument is clothed with 
scales, which, in most of the species, form lines or vittae after a com- 
mon pattern, as follows: A pale line on the fourth interspace com- 
mencing about the middle and variable in extent, another vitta on 
the sixth interspace commencing at the base and extending to about 
the middle; in addition to these there is in some a darker patch or 
fascia on the sides behind the middle. The prothorax is generally 
vittate ; the funicle of the antemue is either 6- or 7-jointed. 
The species occur in the Western and Southern States, are closely 
related, and require great care to be distinguished. The following 
table, sujiplemeuted by the descri|)tions and figures given, will, how- 
ever, enable the student to positively identity them. 
Funicle 7-jointed. 
Fiftli ventral segment of male not, or but slightly elongate. 
Larger, posterior tibife, of feebly curved, claws armed with a long slender 
tooth. Plate vi, fig. 19... 
SniHller, posterior tibia; of strongly curved, tarsi long and slender, claws 
moderately toothed. 
Thorax shorter and more stroTigly narrowed anteriorly, tarsi as long as 
the tibiiE. Plate vi, figs. 20u and 206 oriiatiiliiM. 
Thorax longer and less narrowed in front, tarsi shorter than the tibiae. 
Plate vi, fig. 21a figuratus. 
Fifth ventral segment of male very long, claws armed with a long tooth. PI. 
vi, fig. 22a inei'iiiis. 
