SAKCOPHAGA AND AIJJES 61 



female has a pair of median marginals on second ab- 

 dominal segment. Another female, Miami, Florida, 

 Dec. 19, 1912, shows no other apparent differences 

 but has large median marginal bristles on second alv 

 dominal segment, in fact a complete but slightly iv- 

 regular marginal row. It will require more material 

 to explain these differences. 



Holotype.— Male, No. 20,493, U. S. X. M. 



Allotype.— Female, No. 20193, U. S. N. M. 



HARPAGOPYGA New Genus. 

 (dpTayrj, hook; irvyr], the hinder end) 



Parafacials with a few very delicate almost im- 

 perceptible hairs; vibrissie slightly above oral margin 

 and slightly approximated (as far apart as two-thirds 

 the width of the front, in the male) ; ocellar bristles 

 entirely absent ; orbitals none in male, one in female ; 

 frontal bristles descending to base of antennae ; arista 

 as in Sarcophaga; third antennal joint about twice 

 the second, slender. Thoracic cha?totaxy exactly as 

 in Camptops, except that there are five or six bristles 

 in the hypopleural row (this is probably somewhat 

 variable in all species ) . First vein bare, fourth end- 

 ing not very far before the apex (half the fifth costal 

 segment). 



Agrees with Camptops and Sthenopyga in hav- 

 ing the face destitute of the row of bristly hairs near 

 the eye, and in the fourth vein ending not far before 

 the apex of the wing. In this series of genera, Camp- 

 tops is at once separated by ha^ ing the vibrissje liigh 

 up and close together; both Camptops and Stheno- 

 pyga have the first vein hairy, though this is usually 

 reduced in the males and might possibly fail entirely 

 in some. The orbital bristles are as follows: Camp- 

 tops, one in each sex; Harapagopyga, none in male, 

 one in female; Sthenopyga, none in male, two in fe- 

 male. Ocellars strong in Camptops, weak in Stheno- 

 pyga, absent in Harpagopyga . 



The type of Harpagopyga is the species identi- 

 fied as Sarcophaga d'wcrsipes Coq., and described be- 

 low. 



