44 THOMAS SAY FOUNDATION 



Genus AGRIA Robineau Desvoidy. 



Robineau-Desvoidj^ Myodaires, 1830, p. 376, 

 established the genus with the following definition: 

 "Antennis paulisper incrassatis, cheto villoso; abdo- 

 men punctatum." He explained that he uses the 

 term villoso as meaning subplumose. He described 

 six species, all but one of which are regarded as syno- 

 nyms of Musca aijinis Fallen by Bezzi in vol. iii of 

 the Palaearctic Catalogue; the sixth he recognizes 

 as a Sarcophaga; a finis thus becomes the type 

 of the genus, and is so designated by Coquillett, 

 Type-Species, 1910. Macquart, Hist. Nat. Dipt., 

 ii, 229, 1835, recognized af/inis as belonging to this 

 genus and as being the prior name for at least one of 

 DesYoidy's species ; he howcYcr included a number of 

 diverse forms which later caused some confusion in 

 restricting the genus. 



Affinis occurs in Xorth America, having been 

 identified for Dr. Parker by Dr. Bottcher, and for 

 me by Parker. Its principal generic characters are 

 as follows: 



Front in male narrowed in front of the ocelli, in 

 female rather wide, in both with the median stripe 

 wider than the side ; in the female the parafrontal has 

 numerous rather large hairs, continuous with those of 

 the parafacial, which are much the same as in Sar- 

 cophaga. Frontals about 12, widening gradually be- 

 low, reaching nearly to middle of second antenna 1 

 joint. Antennae reaching nearly to oral margin, the 

 arista with short and rather dense plumosity extend- 

 ing about half its length, vibrissa at oral margin; 

 eyes bare; palpi normal, proboscis short and fleshy; 

 occiput without any pale beard. Fourth vein at bend 

 with a square angle and a slight fold; its end is as far 

 before the apex as half the length of the fifth costal 

 segment. Hypopygium large, mostl}^ occupied witli 

 the first segment, which has a pronounced hump be- 

 fore its middle, forming the apex of the 'abdomen in 

 profile; a row of bristles before the hump; second 

 segment smiall. 



