NOTES ON DIPTERA. 289 



ExoRisTA HORTULANA, Meigen. 

 I have received this species from Mr. Briclgman and also 

 from Mr. Porritt, by both of whom it was bred from Acronycta alni. 

 ExoRisTA AFFiNis, Fallen. 

 Mr. Bridgman sent me specimens of this species bred, 

 together with the last, from Acronycta alni ; and I have also 

 received it from Mr. Fitch, who reared it from a larva of the 

 same species. It appeared such a remarkable circumstance that 

 two distinct but closely-allied parasites should be bred at the 

 same time from the same larvae that I was led to examine them 

 very carefully, and suspect that the flies which I have severally 

 named E. Jiortulana and E. affinis are only varieties of the same 

 species, which is probably new, as it does not exactly agree with 

 the descriptions given of either of the above species. 

 ExoRisTA LOTA, Meig. 

 Mr. Dale sent me specimens bred from Tceniocamjxi stabilis ; 

 and Mr. Fletcher one from Acronycta j^si. 



ExoRisTA PARENS, Eoudaui. 

 I have received this species from Mr. Bignell, bred from 

 Polia Jiavocincta. 



Nemorea notabilis, Meig. 

 Mr. B. Cooke gave me a specimen of this species, bred from 

 Botys verticalis ; and I have received another from Mr. Porritt, 

 reared from the larva of the same species. 



Phorocera concinnata, Meig. 

 Mr. Fletcher has bred this fly from Acronycta aceris. 



Tachina larvarum, Linn. 

 This large parasite has been bred by Mr. Bignell from 

 Zygcenafilipend'idce. 



Baumhaueria vertiginosa, Meig. 

 Mr. Fitch has bred this from the larva of Chclonia caja. 



SCOPOLIA OCYPTERINA, Zctt. 



Mr. Butler sent me this species, reared from Pteroplwrns 

 tephradactylus. 



Thelaira leucozona. Panzer. 



This parasite — which is placed in the family of the Dexiidce 

 instead of the Tachinidce, in consequence of its having a plumose 

 arista — has been bred by Mr. Butler from Chclonia caja, 



Bradt'urd, Yoikshii-e, October, 2(J, 1881. 



2p 



