THE GENUS TACHINOMl'IA WEBBER 303 



Female. — Essentially as in the male, except for the usual sexual 

 differences. 



ry/?e.— Male, U. S. N. M. No. 53390. 



Remarks. — Described from 14 specimens. The holotype is from 

 Big Stone City, S. Dak., collected on June 8, 1908 (Aldrich), and the 

 allotype from Lake Metigoske, Turtle Mountains, N. Dak., June 20, 

 1918 (Aldrich). The paratypes are as follows: Two males, Lake 

 Metigoske, Turtle Mountains, N. Dak., June 20; one female, Mandan, 

 N. Dak., June 16; one female, Bottineau, N. Dak., June 20; one female, 

 Minot, N. Dak., June 18; two males, Wanbay, S. Dak., June 6; one 

 male. Turtle Mountains, near Bottineau, June 21 (all specimens col- 

 lected by Aldrich in 1918) ; two males and one female, Algonquin, 

 111. (Nason) ; one male. Oxbow, Saskatchewan, June 17, 1907 (Knab). 



The paratypes agree well with the type, all having brownish legs, 

 orange-red genitalia, three dorgocentral bristles, and weakly ciliated 

 facial ridges. All but three have well-developed discal abdominal 

 macrochaetae, and the scutellum is mostly brownish in all but two 

 cases, in which black predominates. 



Material examined. — Besides the above there are specimens in the 

 United States National Museum from Idaho, Washington, and Mani- 

 toba, Canada; also a specimen from Kansas in the David G. Hall 

 collection. 



