TAXONOMY OF MUSCOIDEAN FLIES — TOWNSEND 7 1 



bristles 4, the posterior one on each side reaching beyond hind bor- 

 der of scutellum, the others much less strong; 3 dorsocentral bris- 

 tles ; 4 short acrostichal bristles before suture, one strong one next 

 scutellum (if, more behind suture, the pin has destroyed them) ; 

 6 humeral bristles, moderately short ; 3 intrahumeral bristles ; 1 pre- 

 sutural bristle nearly in line with last ; 3 intra-alar bristles, one in 

 front of suture ; 3 strong reclinate supra-alar bristles ; I strong post- 

 alar bristle reaching middle of second abdominal segment, 2 weak 

 ones below it ; scutellar bristles consisting of 3 strong and 2 weak 

 pairs, an apical decussate weak pair, a weak, more separated sub- 

 discal pair in front of last, a strong subapical pair reaching almost 

 to base of third abdominal segment, a shorter pair outside these, and 

 the strongest macrochsetse of entire body being a lateral pair inserted 

 on border in front of last, and which reach nearly to base of third 

 segment ; some other bristly hairs on scutellum appearing more or 

 less like weak macrochaetoe. 



Wings not large, rather narrow, extending about length of anal 

 segment beyond end of abdomen, normal ; costal spine distinct but 

 short ; third longitudinal vein with about five bristles at base ; other 

 veins not spined ; fourth vein ending in wing-tip, straight to bend, 

 which is sudden (but hardly angular) and very obtuse, last section 

 straight, the whole vein so gently bent as to distinctly narrow the 

 apical cell, bend without stump or wrinkle and slightly more re- 

 moved from hind margin than any part of the vein beyond it ; fifth 

 vein running half way from hind crossvein to wing border, rest 

 being wrinkle ; apical cell closed in margin, hind crossvein distinctly 

 trisinuate, a little nearer to bend of fourth vein than to small cross- 

 vein, but not greatly removed from middle, the axis of its anterior 

 half at almost a right angle to fourth vein ; small crossvein slightly 

 before middle of discal cell. 



Abdomen of 4 segments, broad-oval, almost round, strongly con- 

 vex above, subflattened below, first segment shortened ; macrochaetae 

 weak, only marginal except on last segment, first segment without 

 any, second segment with a weak median pair and a weak lateral 

 one, third segment with a marginal row of 8, anal segment with 

 some marginal ones and a row of 6 subdiscal ; ovipositor withdrawn 

 inside the subcircular anal orifice on ventral side of last segment. 



Legs short (only the hind pair present), femora with short black 

 bristles ; hind tibiae not ciliate, with sharp bristles on posterior side 

 and some shorter ones on front side ; tarsi not stout, moderatelv 

 slender, short, about same length as tibiae, metatarsi fully as long as 

 the other joints taken together; claws and pulvilli short, a little 

 shorter than last tarsal joint. Type, the following species : 



