312 PROCEEDINGS OF THE ACADEMY OF [1895. 



vitta?, three postsutural macrochpetre and two sternopleural ; scutel- 

 lum bearing three pairs of long marginal macrochreta?, the posterior 

 pair cruciate. Abdomen gray pollinose and with black reflecting 

 spots, first segment destitute of dorsal macrochseta?, the second with 

 a marginal pair, the third and fourth each with a marginal row. 

 Hind tibia unequally bristly, not ciliate. Wings hyaline, a single 

 bristle at the base of third vein, the others bare; apical crossvein 

 slightly concave, joining the third a short distance before its tip, the 

 bend destitute of a stump or wrinkle ; hind cross vein nearly straight. 

 Length 6.5 mm. Georgetown, Florida, May 10, 1894, and Mobile, 

 Alabama, October 22, 1894 (C. W. Johnson); also Los Angeles Co.. 

 California, in February and September (D. W. Coquillett). Four 

 specimens. 



Belvosia slossonae n. sp. 9 • 



Black, the frontal vitta, face, palpi and scutellum yellow. Front 

 at vertex one and one-half times as wide as either eye, frontal vitta 

 next the antenna? subequal in width to either side of the front, the 

 latter shining yellowish gray ; two pairs of orbital bristles; frontal 

 bristles descending almost to tip of second antennal joint, the upper- 

 most in each row curving backward, the next one directed backward 

 and inward, the two outside of these curving backward; anterior pair 

 of ocellar bristles wanting; antenna? four-fifths as long as the face, 

 the third joint slightly over twice as long as the second; arista 

 thickened its entire length, the penultimate joint slightly longer than 

 broad; sides of face bare, at the narrowest part one- third as wide as 

 the median depression; ridges bristly on the lower two- thirds, 

 several yellow bristly hairs outside of them on the lower half of the 

 ridges; cheeks one-third as wide as the eye-height, covered with 

 short yellowish bristles. Thorax grayish pollinose, and with four 

 black vitta?; four postsutural macrocha?ta?, and four sternopleural; 

 scutellum bearing four pairs of long marginal macroch?eta? and a 

 short apical pair. Abdomen on bases of last three segments yellow- 

 ish gray pollinose, most extended on the third and fourth; first and 

 second segments each bearing a marginal pair of macrocha?ta\ the 

 third and fourth each with a marginal row. Hind tibia? rather 

 sparsely ciliate with somewhat long bristles. Wings grayish brown, 

 tinged with yellow along the veins of the basal and costal portions; 

 third vein bearing four bristles at its base, the others bare. Length 



