6 NaTuRAL History BULLETIN. 
three longitudinal grooves and a transverse binarcuate groove 
near the base connecting the three foveze; the head is longi- 
tudinally oblong; the eyes small, smaller in the 9; the vertex 
elevated above the level of the eyes, and an arcuate groove 
connects two occipital fovez on the disk. The antennz are 
inserted on the sides beneath lateral tumefactions of the 
frontal margin; the clypeus is variously sculptured; the lab- 
rum transverse; the maxillary palpi have the first joint small, 
cylindrical; the second long arcuate-clavate; the third small, 
globular; the last fusiform, more convex externally. Anten- 
nz with the three terminal joints always enlarged; the legs 
long, with clavate thighs and slender tarsi which bear two 
unequal claws; the trochanters are commonly long, obliquely 
jointed to the thighs; the anterior coxee are conical and con- 
tiguous, the posterior pair transverse. 
TABLE OF SPECIES. 
-I. Posterior tibiz without a terminal process; intermediate basal elytral fovea 
obsolete; occipital fovea nude. 
18 Vertex not carinate in the middle, occiput tumefied, posteriorly overlap- 
ping the neck; ¢ intermediate thighs with a curved spine near the 
trochanters. Length 2.66 mm. Georgia. . - - - 10N@» 
1? Vertex with three convergent carinz on the occiput; 4 anterior tibie 
with a strong recurved spine near the middle, the intermediate femora 
notched above. 
2* Occiput tumefied; ¢ posterior tarsi with the second joint dilated. 
Length 2.4 mm. Pennsylvania. - - - -  armiger. 
21 Occiput not tumefied, ¢ posterior tarsi simple. 
Elytra punctulate, sides of prothorax abruptly sinuate behind; 
ninth and tenth antennal joints sub-equal, the eleventh 
wider than the tenth, ovate. Length 2.4mm. Virginia. 
Serox. 
11 Vertex with one occipital carina (doubtful) — - ; - -  confinis. 
. 
II. Posterior tibiz with a long terminal process, base of the elytra trifoveate. 
1® Head prognathous, front not separated from the clypeus by an inter- 
antennal excavation in either sex. 4 last antennal joint with an erect 
basal tooth. 
“l 
