THE CANADIAN ENTOMOLOGIST 313 



tance between hind ocelli; frontal stripe extending to ocelli; orbits 

 very narrow, widening below, shining black to below level of 

 arista, then thinly brown pollinose; facialia and lunule more 

 densely brown pollinose; antennae black, of ordinary size, arista 

 bare, its penultimate joint longer than wide; palpi and proboscis 

 black; postorbital cilia long, slender, curling over the eye. Thorax 

 shining black, unstriped, only the postnotum and a space above 

 the hind coxa with thin, brown pollen; prealar indistinguishable 

 among some long hairs, several pairs of long, erect anterior acrosti- 

 chals mixed with slender, tall hairs; mesopleura and sternopleura 

 with abundant long hair, the two stpl. bristles of striking length; 

 halteres blackish, calypters deep yellow. Abdomen rather elongate, 

 shining black, only when viewed from behind showing a thin, 

 dark pollen with a median dark stripe. Legs wholly shining black; 

 front femora with the usual two teeth below, and abundant hairs 

 on outer side, among which below about five bristles form a short 

 row; front tibiae broadly flattened and corrugated on the inner 

 side opposite the femoral teeth, without bristles except at tip; 

 middle femora on front side with short, erect, dense hairs, on hind 

 side with immensely long hairs, some 2/5 as long as the femur; 

 middle tibia on outer front side with four slender bristles beyond 

 middle, the subapical long and hairlike; on the outer hind side with 

 four bristles, and on inner hind side close to tip with half a dozen 

 smallish, hairlike bristles; middle basitarsus with unusually long 

 hairs below, which are longer apically and continue but slightly 

 reduced to the tip of the following joint; hind femur below at 

 base with a stout, erect double spine with crooked tip; on the 

 outer side the upper series of bristles is complete and the lower 

 begins at the middle; hind tibia with striking rows of long villous 

 hairs or bristles on the outer and inner flexor sides, the outer espe- 

 cially long, some of them 2/5 as long as the tibia; a distinct bristle 

 just below the middle behind, and on the outer hind side a series 

 of long hairs in which two bristles occur. Pulvilli dark, not 

 elongated. 



Wings brownish, third and fourth veins barely convergent; 

 last segment of the fourth less than twice the preceding. 



Female.—Shimng black, including abdomen. Front one-third 

 the head-width, velvet black except the large, shining ©cellar 



