SAKCOPHAGA AXD ALLIES 293 



parafacials have very few and delicate haii's; frontal 

 stripe black, sharply defined; frontal bristles about 

 seven, rather stout, two or three pairs, partly recli- 

 nate, the rows moderately but not abruptly divergent 

 below ; ocellar bristles present, slender ; outer verticals 

 not differentiated; antennae black, third joint nearly 

 three times the second, reaching five-sixths of the way 

 to the vibrissee, which are at the oral margin; arista 

 plmnose for two-thirds of its length; palpi and pro- 

 boscis black, ordinary; bucca one-fourth the eye- 

 height, with black bristles, including some of those 

 behind the suture; back of head with three rows of 

 black hairs, those on the middle part pale and cover- 

 ing most of the metacephalon. 



Thorax with bluish-gray pollen and the usual 

 three to five strij^es; ps dc four, the foremost two 

 small ; ant acr none ; prsc small ; stpl three ; scutellum 

 with two large marginals and a smallish subapical 

 pair, but no apicals. 



Abdomen tessellated, with bluish-gray pollen; 

 fourth segment mostly red ; first and second segments 

 with only lateral bristles; third with a large, erect 

 median marginal pair; fourth with marginal row of 

 about 8; fifth sternite mostly concealed, at the base 

 excised but not divergent for a short distance, then 

 rather U-shaped. 



Hypopygimii yellow; first segment pollinose, 

 with only a few bristles behind ; second segment rather 

 small, with one pair of noticeable bristles; forceps 

 quite long and nearly straight; viewed from behind 

 they are hardly at all divergent and taper to a point ; 

 from tlie side they curve very little forward and taper 

 uniformly; accessory plate yellow, very long, and 

 rather straight; the front side narrowed toward the 

 tip, which is rounded and bears minute spines on the 

 front side; posterior clasper yellow, rather flat and 

 sinuous in shape, with a long hair arising near the 

 middle; anterior clasper large, yellow, strongly 

 hooked; penis very small, the basal joint, however, of 

 ordinary size, yellow; the distal segment is some- 



