THE CANADIAN ENTOMOLOGIST. 83 



on front side of hind femora at base, white ; bristles reddish ; apex of tarsi 

 black. Wings hyaline, costal cell yellowish. 



$ . Eyes quite widely separated on the front, the latter wholly silvery 

 white poUinose ; hypopygium very large and greatly dilated below. 



Length 4-5 m.m. Cal. ! 4 $ and 6 $ , in Sept. (several pairs were 

 in coitu). 



2. Leptochilus, Loew. 



I. — Hind margin of scutellum shallowly concave, wings hyaline, costal 



cell yellowish modestus Lw. 



Hind margin of scutellum convex, basal third or more of wings 

 blackish-brown transitus, n. sp. 



L. transittis, n. sp. — % . Front black, the lower half gray pollinose, 

 black pilose, that next the antennae white ; face black, gray pollinose, yel- 

 lowish and black pilose, most abundant on oral margin ; face and front 

 apparently destitute of short, appressed tomentum ; proboscis never pro- 

 jects more than one half the length of its labellte beyond hyperstoma. 

 Antennas black, first joint about four times as long as the second. Occi- 

 put gray pollinose, the upper part yellowish tomentose. Thorax black, 

 yellowish tomentose, sides broadly white tomentose ; pile and bristles 

 largely black ; pleura white pilose, that on upper part yellowish. Scu- 

 tellum shining black, rounded behind, yellowish tomentose, the pile and 

 bristles black. Abdomen black, yellowish tomentose, that on base of each 

 segment white ; sides of first segment abundant whitish pilose, sides of 

 other segments very sparse black and white pilose, dorsum of abdomen 

 sparse long black pilose ; venter black, white tomentose. Femora black, 

 tibiae, bases of tarsi and sometimes of the femora, reddish ; apex of tarsi 

 and sometimes base of hind tarsi and apex of hind tibiae, black ; tomen- 

 tum of legs white, the bristles reddish. Wings hyaline at the apex, the 

 base brown, the outline of this color extending from apex of first vein 

 obliquely to second vein, then basally a short distance, then transversely 

 to discal cell beyond small cross-vein, then basally to base of discal cell, 

 then transversely to extreme base of fourth posterior cell, then basally to 

 axillary incision. 



^ . Eyes narrowly separated on the front, hypopygium small and not 

 dilated below. 



Length 5-8 m. m. Cal. ! 10 ^^ and 7 ? in April. 



