NORTH AMERICAN DIPTEKA. 12!) 



little constricted below ; sides of face vei-y narrow, hare ; cheeks 

 not as wide as one-fourth of eye-hight, with some hairs and bristles 

 on lower portion ; vibrissie not strong, not decussate, inserted a little 

 above oral margin. Eyes bare, descending a little short of vibrissje. 

 Antennte only a little shorter than face, inserted high, first two joints 

 short, third five or more times as long as second, moderately wide 

 but linear, truncate at tip, the apical corners rounded ; arista about 

 as long as third joint, microscopically pnl)escent, tiiickened more 

 than half its length, distinctly 2-j()inted and geniculate, no distinct 

 basal joint, the next to last joint (second joint strictly speaking) 

 elongate. Proboscis two and a half to three times as long as hight 

 of head, slender, without labella, strongly curved backward before 

 tip ; palpi slender, but considerably thickened at tip, not long. Tho- 

 rax somewhat narrower than head ; scutellum with an apical and 

 lateral pair of macrochretie, the former not decu.ssate, and but little 

 exceeding middle of second abdominal joint. Abdomen hardly 

 wider than thorax, elongate-oval, first segment shortened; macro- 

 chsetse only marginal, absent or weak on first two segments. Legs 

 slender, rather long, with only fine bristles, metatarsi as long as fol- 

 lowing joints together, front tarsi nearly or quite twice as long as 

 tibise ; claws and pulvilli very short in female. Wings longer than 

 abdomen, moderately broad, with very small costal spine, wing-veins 

 unspined ; apical cell terminating at wing apex, closed in the mar- 

 gin ; fourth vein curved, without stump or wrinkle, apical cross-vein 

 almost straight; hind cross-vein nearly straight, per]>endicular to 

 fourth vein, in middle between small cross-vein and bend of fourth. 

 Type, C geiiicnldUi n. sp. 



Coroniinyia geuiciilata n. sp. 9 (?)• — E.ve.s nearly black, front silvery, 

 with a .slisjht jjoldeu tinjje. frontal vitta golden-brown, very sliort, about one- 

 third the width of front, split behind eudosinir the ocelli : face, sides of face and 

 cheeks silvery-white, the latter pale golden posteriorly and lielow : first and 

 second antennal joints reddish brown, third joint and arista blackish, .second 

 antennal joint with a curved bristle on front edjic : i)rol)oseis brown at genicu- 

 lation, blackish at tip, palpi pale brownish yellow, with some very small bristles 

 toward tip; occiput cinereous, with a fiolden tinge on borders, and a few short 

 bristles on upper portion. Thora.K cinereous, with a slight yellowish tinge, and 

 with four narrow black vittie more or less interrupted at the snturc: scutelhun 

 yellowish cinereous. Abdomen brownish black, second and third .segments 

 slightly yellowish cinereous at base, and with anal segment broadly so on sides; 

 sides of first, second, and anterior portion of third .segn)ents brownish yellow; 

 first segment without macrochictie. second segment with a lateral one; third 

 segment with a lateral marginal pair, fourth segment with si.\ marginal macro- 



TKANS. .\M. ENT. SOC. XIX. (17) JUNE, 1892. 



