146 THOMAS SAY FOUNDATION 



No, 67. Sarcophaga flavipes n. sp. 



Male. Front .157 of head (in one specimen) ; 

 parafrontals narrow, thinly gray pollinose, the black 

 ground color showing through; the pollen })ecomes 

 considerably denser below, so that the parafacials 

 have a silvery sheen, but thinner than usual; they are 

 narrow, and bear a long and almost double row of 

 stout hairs; facial impression reddish, extending up 

 the facialia almost to a connection with the frontal 

 stripe, which is of similar color and texture; antennae 

 yellow, third joint brown, 21/9 times the second, and 

 reaching almost to the vibrissie; arista with usual 

 plumosity for half its length ; the vibrissa are slightly 

 above the oral margin, which is itself, owing to the 

 curvature of the bucca, much above the lower line of 

 the head; palpi j^ellow at base, strongly infuscated, 

 almost black on apical half; proboscis mostly yellow; 

 bucca one-third eyeheight; back of head flat, with 

 about three rows of black hairs behind eye and con- 

 siderable pale beard below and about the neck; outer 

 vertical absent; ocellars slender, not large. 



Thorax gray pollinose, with the usual 3-5 black 

 stripes; ps dc 3; ant acr strong; presc medium; stpl 

 3; scutellum with two lateral, one subapical rather 

 small, one apical of medium size. 



Abdomen whitish-pollinose, tessellated, with a 

 fairly distinct median line, foiu'th segment with red 

 hind border; first and second abdominal segments 

 with only laterals, third with a pair of large median 

 marginals and several laterals at a distance from 

 them; fourth with the usual marginal row, about 14. 



Hypopygium small, red; first segment retract- 

 ed, with a row of slender bristles near hind edge ; sec- 

 ond with several straight scattered erect small bris- 

 tles; forceps small, yellow, thin and bladelike when 

 viewed from behind, in profile tapering, slightly 

 curved forward to a symmetrical point, which bears 

 a small tooth; accessory plate yellow, ending in a 

 rather sharp point; posterior clasper rather narrow, 



