44 
nearly smooth, sinning; teguhe, pleura, and abdomen smooth. Wings 
hyaline. General color glistening black; antennal scape dusky: pedi- 
cel nearly white; first funicle joint dark brown; joints 2 and .*> nearly 
white, somewhat yellowish; club light brown; mesopostscutellum 
nearly white; all coxa' black: trochanters nearly white: all femora 
and tibiae black or dark brown, lighter at extremities; tarsi all nearly 
white, including terminal joints: pile on sides of abdomen and hind 
femora white, showing distinctly against the black surface. 
Described from one female specimen, reared March 1, from Aspidio- 
tus ancylus on linden. District of Columbia. There is also a huge 
series of specimens of this species in the National Museum collection 
reared from Cltionaspis quereus^ at Alameda, Cal., by A. Koebele, in 
August. Among the series is a number of males, but none are in con- 
dition for description. Such antennal fragments as remain, however, 
show that the antennae are probably of a uniform brown color. Mr. 
W. (i. Johnson has also sent me from the State Laboratory of Natural 
History at Champaign, 111., a series of five specimens reared from his 
manuscript Chionaspis americana on elm. 
