66 THE CANADIAN ENTOMOLOGIST. 



as last tarsal joint, pulvilli smoky. Wings grayish-hyaline, costo-basal 

 portions broadly yellowish ; tegulaj nearly white, halteres brownish-yellow. 



Length of body, 103^ mm.j of wing, 'jy^ mm. 



Described from one specimen ; Ames, Iowa (Osborn). 



Pseudog07iia ruficauda, n. sp., ^ . 



Eyes light brownish ; front more than one-third width of head, frontal 

 vitta dark brownish ; sides of front brassy-golden, face and cheeks silvery- 

 white, epistoma yellowish, antennae and arista deep black, first two 

 antennal joints rufous ; proboscis black, tip and base brownish, palpi 

 pale rufous ; occiput cinereous, thickly yellowish-gray, hairy. Thorax 

 black, silvery- poUinose, leaving four black vittse, humeri and pleurae 

 silvery with a brassy tinge ; scutellum testaceous, somewhat silvery. 

 Abdomen black, first segment slightly silvery behind, second and third 

 segments more or less thinly and anal segment thickly brassy-pollinose, 

 tip of anal segment rufous ; first segment with one lateral macrochaeta, 

 second with one lateral and a median marginal pair, third with a mar- 

 ginal row of ten or twelve, anal with a marginal row of about as 

 many ; hypopygium black, hairy. Legs black, front femora thick 

 silvery on underside, all femora bristly, middle and hind tibiae with strong 

 macrochsetae, claws and pulvilli elongate, pulvilli tawny-fuscous. Wings 

 grayish-hyaline ; veins on costo-basal portions, also middle portion of 

 marginal cell, pale yellowish ; tegulae white, halteres fuscous. 



Length of body, 11 mm.; of wing, 8 mm. 



Described from one specimen; Brookings, So. Dakota (J. M, 

 Aldrich). 



I refer this species to Pseudogonia, Br. & v. Bgst. The second 

 antennal joint is elongate, third two and a half times as long as second ; 

 arista geniculate, second joint elongate ; sides of face bristly, as in 

 Cnephalia and Gonia, but the second aristal joint less than half as long 

 as third ; proboscis longer than height of head, slim ; palpi long, slender 

 basally, thickened apically. 



A $ specimen from N. Y. (Comstock) differs chiefly in the anal seg- 

 ment being wholly black at tip, not at all rufous ; the third antennal joint 

 blackish, rufous at base, arista brown. If these differences are, as I 

 believe, entitled to specific value, the species may be known as P. obsoieta. 

 It is II niiii. Jong. 



