Abt. 12 THE FLY GENUS SARCOPHAGA ALDRICH 7 



Wings hyaline, first vein setulose on basal half; third setulose 

 nearly to cross vein ; bend of fourth rectangular, hind crossvein join- 

 ing fourth at two-thirds the distance from anterior crossvein to 

 bend. First posterior cell rather widely open ; epaulet red. 



Legs black, femora stouter than usual ; middle tibia with 2 bristles 

 on outer front side ; middle femur with small, slanting comb on lower 

 hind side at tip ; none of the tibiae with villosity. 



Length about 9 mm. 



Sarcophaga modesta, p. 363. 



One female, from the Vienna Museum, " Brasilien. Coll. Win- 

 them. " Agrees with the description and appears to be the type. 

 It agrees throughout with Townsend's Sarcophaga argentea in the 

 Proceedings of the United States National Museum (vol. 43, 1912, 

 p. 358) ; type of Argoravinia^ new genus, in the Proceedings of the 

 Biological Society of Washington, (vol. 30, 1917, p. 190), except that 

 the pollen of the head is slightly yellowish in the Townsend type, a 

 female from Piura, Peru. I believe, however, that the species is the 

 same, as a slight fading in the old Wiedemann specimen would ac- 

 count for the difference. Townsend has correctly placed my Sar- 

 cophaga -fissa as the male of argentea., in the Proceedings of the 

 Entomological Society of Washington (vol. 20, 1918, p. 20) ; -fissa 

 was described in Sarcophaga and Allies (1916, p. 290, fig.). The 

 wide parafrontals and parafacials, with the setulose first vein, seem 

 to make this a good genus. No detailed description of the female 

 having been published, I offer the following, taken from Wiede- 

 mann's type. 



Female. — Front wide, at vertex 0.33 of head width, continuing of 

 same width nearly to antennal level. Frontal stripe rather narrow, 

 hardly wider than third antennal joint. Parafrontals and parafa- 

 cials with smooth white pollen, barely tinged with yellow, the para- 

 facials almost twice as wide as third antennal joint. Cheeks with 

 less dense pale pollen, two-fifths of eye height. Antennae black, 

 second joint reddish at tip, third over twice the second in length; 

 arista normal. Palpi black. Back of head with two rows of black 

 orbital setules above, changing to pale above the level of the lower 

 curve of the eye; remainder of back of head with conspicuous pale 

 hair. Verticals two; ocellars large, orbitals two; one upper frontal 

 large, near eye (scar), the rest of the frontals in five pairs, the 

 rows exactly parallel, lowest pair at base of second antennal joint. 



Thorax gray, humerus and stripe above notopleural suture nearly 

 white, other mesonotal stripes faint. Middle of scutellum and hind 

 part of mesonotum with pollen changeable on middle line, light 

 on one half and dark on the other according to the light. Chaeto- 

 taxy: Dorsocentral 2, 2 (the posterior are far back, some setules 



