Oct., 1920 Bulletin of the Brooklyn Entomological Society 109 



marginals, they may be present and very weak and decumbent 

 or may be well developed ; third segment with two dorsal mar- 

 ginals and three pairs of laterals. 



Genital Segments. — First: brownish or black, shining, the 

 posterior portion may be dull orange, vestiture as long as that 

 of second; marginal bristles present; second: dull orange; 

 subglobose; forceps: blackish; broad; vestiture of basal por- 

 tion long; clothed with hairs about half length of prongs; 

 prongs approximated about two-thirds of length; each prong 

 in profile with edges almost parallel, but the anterior edge 

 -slightlv sinuate; truncated obliquely forward and ending in 

 tooth, 'the end third or thereabouts with minute spines. 



Holotype (male) : collection of author. 



Described from six male specimens. 



Range.— British Columbia; Vancouver, 5-23-18, (holotype) 

 Caulfields, '5^i2^^^i8~(R. S. Sherman) ; Alaska; Fort Wrangel 

 (Wickham). 



In the four Alaska specimens examined the upper frontal bris- 

 tles were longer than the lower ones, while in the two British 

 Columbia specimens the upper and lower bristle were of about 

 equal length. This character differs from that in most Sar- 

 cophaga, the upper frontals usually being much shorter. The 

 pad-like mat of bristles on the four ventral plates is also uncom- 

 mon. I have seen this character in but one other species, which 

 occurs in India. The hairy vestiture of the dorsal portion of the 

 abdominal nota is also unusual. 



^^rr-C^S 



