154 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



broadly, arcuately expanded behind the middle, then obliquely 

 narrowed to the tips, which are separately, broadly rounded, and 

 coarsely serrulate; sides of abdomen scarcely exposed above; disk 

 rather strongly flattened anteriorly, without distinct costae, the 

 sutural margins feebly elevated posteriorly, and with broad, deep 

 basal depressions; surface densely, rather coarsely imbricate-punc- 

 tate, and sparsely clothed with short, recumbent, whitish hairs, 

 which are more uniformly distributed posteriorly and along the 

 sides. 



Abdomen beneath finely, densely punctate at middle, becoming 

 more densely punctate toward the sides, transversely rugose on basal 

 segment, and clothed with moderately long, semierect, whitish hairs, 

 which are sparsely placed on the median part but becoming denser 

 toward the sides; first segment broadly concave at middle, and the 

 bottom of the concavity rugose; second segment with a smooth, deep 

 depression extending from the anterior margin to behind the middle 

 of segment; Jast segment transversely truncate at apex; vertical 

 portions of segments not conspicuously pubescent; pygidium coarsely 

 punctured, strongly carinate, the carina strongly projecting, and 

 truncate at apex. Presternum finely, densely punctate, densely 

 rugose, and rather densely clothed with moderately long, semierect, 

 white hairs; prosternal lobe broad, rather strongly declivous, and 

 broadly, vaguely emarginate in front; prosternal process broad, the 

 sides parallel to behind the coxal cavities, then obliquely narrowed 

 to the apex, which is acute. Tibiae slender, and the anterior and 

 middle pairs armed with a very small tooth on inner margin at apex. 

 Posterior tarsi distinctly shorter than tibiae, and the first joint 

 about as long as the following three joints united. Tarsal claws dis- 

 similar, anterior and middle ones cleft near apex, the teeth nearly 

 equal in length, and the inner ones not turned inward; posterior 

 claws cleft near the middle, and the inner tooth much shorter than 

 outer one. Genitalia similar to those of anxius Gory. 



Length, 7.5 mm. ; width, 1.75 mm. 



Female. — Differs from the male in having the front of head red- 

 dish cupreous, sparsely pubescent, and the sides more parallel to each 

 other ; first and second abdominal segments convex at middle ; tibiae 

 unarmed at apex, and the tarsal claws similar on all feet, cleft neai 

 the middle, and the inner tooth much shorter than the outer one. 



Type locality. — Plummer Island, Md. (near Washington, D. C). 



Other localities. — Fairfax County, Va. 



Type and allotype.— Cut. No. 40998, U.S.N.M. 



Paratype. — Collection Warren Knaus. 



Described from three specimens, two males and one female (one 

 type). One male and female reared from pupae collected in pupal 



