16 



U. S. NATIONAL MUSEUM BULLETIN 209 



Pompilus (Agenia) nigropilosus Cresson, 1867, Trans. Amer. Ent, Soc, vol. 1, 



p. 124, cf. Type: c?", West Virginia (Philadelphia). 

 Pseudagenia mariva Brimley, 1928, Journ. Elisha Mitchell Sci. Soc, vol. 43, p. 



202, cf . Type: d", Linville Falls, N. C. (Raleigh). 



Male: Forewing about 11 mm. long; subgenital plate crescent 

 shaped because of a broad deep semicircular emargination ; genitalia 

 visible beyond the subgenital plate as a pair of divergent fingerlike 

 lobes that form a Y, both these lobes and the apical emargination of 

 the subgenital plate densely setose. 



Black. Pubescence dark gray, the longer hairs blackish; wings 

 moderately infuscate, paler on the basal 0.4. 



Figure 3. — Localities for Chirodamus fortis. 



Female: Forewing 10 to 15 mm. long; head and body with the 

 punctation finer and denser than in C. albopilosus; second flagellar 

 segment about 2.4 as long as wide; dorsal face of pronotum about 

 0.4 as long as wide. 



Black. Pubescence black; wings heavily infuscate. 



Specimens (Scf, 319): From District of Columbia; Georgia (Neel 

 Gap and Kabun Bald) ; Marjdand (Cabin John, Frostburg, Plummers 

 Island, and Takoma Park); New York; North Carolina (Asheville, 

 Boone, Cedar Mt., Grandfather Mt., Highlands, and Linville Falls); 

 South Carolina (Greenville County); Virginia (Arlington, Bucking- 

 ham County, Chain Bridge, Glencarlyn, Falls Church, and Nelson 

 County) ; and West Virginia. 



Dates of collection are rather evenly distributed from May 29 to 

 Sept. 22. Mr. David Shappirio tells me that this species is found in 

 woods, often running over the dead leaves. 



This species occurs in the Allegheny faunal area from Pennsylvania 

 to Georgia. 



