46 PEOCEEDINGS OF THE NATIONAL MUSEUM vol.79 



Smith) ; 1 male and 1 female, Barro Colorado Island, and Corozal, 

 Canal Zone (C. H. Curran). 



(27) WINTHEMIA BICOLOR, new species 



Female. — Front at vertex 0.265 of the head width in the one 

 specimen, widening gradually downward; parafrontals gray polli- 

 nose tinged with yellow, beset with scattered fine black hairs; me- 

 dian stripe brownish black, narrowed toward triangle ; verticals two 

 pairs; ©cellars rather small; orbitals present; f rentals about eight 

 in number, the uppermost three in each row large and reclinate, 

 lower ones at or a little below apex of second antennal joint; face 

 very flat, silvery, the sides greatly narrowed or almost linear below, 

 bearing a few black hairs to about the level with tip of antennae; 

 vibrissae large, on oral margin; antennae black, third joint four 

 times the length of second; arista long, slender, with short basal 

 joints; cheeks gray pollinose, sparsely hairy, about one-eighth the 

 eye height; palpi thickened and yellow apically more or less infus- 

 cated on basal half. 



Thorax black, covered with gray pollen which is thinner and 

 tinged with yellow on mesonotum; the latter marked with five 

 black stripes, the narrower median one distinct before the suture in 

 most angles ; scutellum broadly reddish ; calypters white with yellow 

 margins. 



Abdomen largely reddish; last three segments with thin yellow- 

 ish pollen on basal half or more ; first segment without median mar- 

 ginals; second with a stout pair; a marginal row on third and 

 fourth besides a discal row on the latter ; hairs on intermediate seg- 

 ments depressed. 



Legs rather slender ; femora except at apex reddish yellow ; apical 

 joint of front tarsi moderately dilated but shorter than the two pre- 

 ceding joints; mid tibiae with one large bristle on outer front side 

 near middle; hind tibiae with a row of short bristles including one 

 longer on outer posterior side ; claws and pulvilli short. 



Wings somewhat infuscated especially at base and next to the 

 costa; venation as usual; fourth vein with a rectangular bend, con- 

 cave beyond to costa; first posterior cell open well before apex of 

 wing ; third vein with two hairs at base ; costal spine not developed. 



Length, 9 mm. 



Male . — Unknown. 



Ty^e.— Female, U.S.N.M. No. 43349. 



Described from a specimen collected at Itaquaquecetuba, Sao 

 Paulo, Brazil, June 22, by C. H. T. Townsend. 



The species is closely related to pinguis but differs in having the 

 femora and abdomen largely yellow, the apical joint of the fore 



