ART. 10 walker's north AMERICAlsr TACHINIDAE ALDEICH 13 



the species included by Coquillett on page 115 of liis Kevision as 

 Masicera eufitchlae Townsend, which, however, is not the true 

 eufltchiae of Townsend. Director Gillette, of the Colorado Experi- 

 ment Station, has generously deposited in the National Museum five 

 remaining specimens of the reared lot from which the type of 

 Townsend's species came; I find it almost if not quite the same 

 species that was described later by Tothill ^'^ as Lydella hyjyhantriae. 

 Curran *^ has noted the same point about hyphantriae. This, how- 

 ever, does not affect the Walker species, which I refer to Anetia 

 Robineau-Desvoidy [Lydella of authors). 



Tachina albifrons Walker, Insecta Saundersiana, p. 283. Co- 

 quillett (p. 110) placed the species in Sturmia^ and identified it 

 correctly, according to my examination of the type, which is a female. 

 Walker preoccupied the name Tachina albifrons in 1837; hence 

 Townsend ^^ has proposed the name ricinorum for the present species 

 and makes it the type of the new genus Gymnocarcelia^ but without 

 indicating any characters except " quite bare ej'^es." Without a 

 fuller study than has yet been made of the American forms related 

 to Sturijiia, it is difficult to estimate the value of some of the char- 

 acters, but I should call this species Stur^nia Hcinorum Townsend. 



Tachina panaetius Walker, List, p. 767. Coquillett (p. 119) 

 placed this as a synonym of mella Walker in the genus Tachina of 

 authors. The type is a female from Nova Scotia, and Townsend's 

 Tachinomyia rohusta is a synonym, which is the next species in 

 Coquillett's Revision. I take Tachinomyia panaetius Walker as the 

 valid name for the species, which includes as synonyms Walker's 

 Tachina pansa^ T. violenta, and T. irrequieta. Major Austen had 

 placed the four Walker species together as one in the British Museum 

 a long time ago, but had not published his conclusion. 



Tachina pansa Walker, List, p. 787. Coquillett (p. 119) placed 

 this with the preceding under nulla Walker. The type is a male of 

 panaetius. 



Tachina mella Walker, List, p. 767. Coquillett (p. 119) placed, 

 this in Tachina in the current sense. I did not find the type, the 

 only mella that I discovered being one named by Townsend, agree- 

 ing with Coquillett's interpretation. There is little doubt that Co- 

 quillett had the right species, and no serious question has arisen 

 on the point. The species is a very common northern one, and P 

 think identical with Exorista larvaTum Linnaeus of Europe, com- 

 monly referred to Tachina (see note under Tachina dydas). 



Tachina hybreas Walker, List, p. 785. Coquillett (p. 119) 

 could not identify the species, but placed it as probably a Tachina. 



*8Caii. Dept. Agr. Bull. 3, Tech. Ser., p. 43, 1922. 

 « Can. Bnt., vol. 59, pp. 12, 13, 1927. 

 "Proc. U. S. Nat. Mus., vol. 56, p. 582, 1919. 



