ART. 10 NOETH AMEEICAN TACHINID FLIES WEBBER 27 



Thorax black, gray poUinose; chaetotaxy as in frenchii. Scutel- 

 lum brownish, bearing four pairs of strong marginal bristles (the 

 second pair from suture Aveakest) besides a cruciate apical pair. 



Abdomen black, gray pollinose, particularly the bases of last 

 three segments, sides of first and second segments sometimes reddish, 

 anal segment sometimes wholly gray pollinose; no longer hairs or 

 indication of marginal bristles on the first two segments ; third with 

 a marginal row which in the female are not so long as the fourth 

 segment; in male the bristles of the third segment are stronger and 

 equal to, if not longer than the fourth segment, fourth segment 

 bristly on aj)ical half, the bristles stronger in male than in female. 



Legs black with a piceous tinge. Front pulvilli of male as long 

 as last tarsal joint. Hind tibiae ciliate with one longer bristle. 

 Mid tibiae with one long and one short bristle above it on the outer 

 front side near middle. 



Genitalia of male brownish ; forceps viewed from behind at widest 

 part scarcely half as wide as long; in profile the inner forceps are 

 straight, sparsely hairy at base and along their sides, outer forceps 

 stout. 



Length, 8-9 mm. 



The species appears to have a wide range in the United States. 



13. ACHAETONEURA PHOLI, new species 



Front of male at vertex 0.25, of female 0.28 the head width; face 

 and front cinereous, the latter with a golden tinge; frontal bristles 

 variable, in the male a row of eight to ten bristles of unequal strength 

 besides the two reclinate upper fronto-orbital ones, in the female 

 usually the lowest five or six strong, followed by several weaker 

 ones; facialia of male weakly bristly for at least half their length, 

 in female scarcely over one-third way; third joint of antennae in 

 male four and one-half times, and in female four times the length of 

 the second, second joint and base of third brownish, this color 

 more conspicuous in the female; bucca one-sixth the eye height; 

 palpi light yellow, swollen at tip and sparsely clothed with black 

 hairs. 



Thorax black, thickly gray pollinose tinged with yellow; sterno- 

 pleural plate light gray pollinose ; chaetotaxy as in frenchii. Scutel- 

 lum black, gray pollinose, the tip brownish and bearing four pairs of 

 marginal bristles besides the cruciate apical ones. 



Abdomen black, subshining, bases of segments two to four grayish 

 pollinose, the pollen especially noticeable on sides of intermediate 

 segments, in female the pollen is of a lighter shade; first segment 

 without median marginal bristles; second with a marginal pair 

 scarcely discernible from the adjacent hairs, stronger in female; 



