262 THOMAS SAY FOUNDATION 



penis yellow, basal segment indistinct but slender, dis- 

 tal segment suddenly widening behind into a globose 

 mass, which is rather open apically, where there are 

 some small black organs ; in profile the apex is nearly 

 truncate and at the front edge a slender flat process 

 bends toward the base. 



Legs black ; middle tibia slightly reddish, with 

 two bristles on outer front side ; middle femur without 

 comb; hind femur greatly thickened from the base 

 with a pronounced projection below a little beyond 

 the middle, from the outer side of which, extending 

 half way to the apex, there is a dense brush of short, 

 black spines; the tibia is even more remarkable in 

 shape, as it is bent close to the base almost at a right 

 angle; is very stout and only about half the length 

 of the femur, evidently closing against the femoral 

 brush to form a grasping organ. On its outer side 

 there are 8 or 10 long bristles; hind tarsi of ordinary 

 structure. 



Wing subhyaline; no costal spine; third costal 

 segment about equal to the fifth ; first vein bare ; third 

 hairy nearly to the crossvein. 



Length 10 mm. 



One male, Jemez Mountains, N. M., July 25, 

 1914, presented by Mr. H. S. Harbeck to the Na- 

 tional Museimi. 



Holotj^pe.— Male, No. 20562, U. S. N. M. 



No. 125. Sarcophaga insurgens n. sp. 



Male. Front .280 of head. Like incurva in 

 every detail except the following: The hind tibia 

 instead of being bent at right angles, very short and 

 stout, is in this species only a little curved, about two- 

 thirds as long as the femur; the hind femur is only a 

 little thickened, not more than in some other species; 

 it has on the under side just beyond the middle about 

 a half dozen closely placed stubby spines, upon a 

 slight, almost imperceptible elevation. The genitalia 

 are strikingly similar to those of incurva,, almost iden- 

 tical, in fact, but are not very well spread and the 



