.'^30 Mr. E. K. Austen on the Synonymy (imi 



Rol).-Desv. : syn. Tachina addita, Walk. (Ins. Saund. — Dipt, 

 iv. (1852) p. 2'JO), as correctly stated by Coquillctt &Aldrieh. 



Tachina dydas (ibid. p. 748. — Hudson's Bay) = Eu(achina 

 rtutica, Mg. 



Tachina ninsurins (ibid. p. 7y>l. — N. America) is an 

 Aconyia, Rob.-Dcsv., apparently distinct from A. dcntata, 

 Coij., and A. tibialis, Coq. 



Tachina ch'sides {ibid. p. 757. — N. America) is a P/iori- 

 chtcta, Hond. P. tricincta, Rond. (Dijjt. Ital. Prodr. iv. 

 (18()1 ) |). 103), described from Italy, is apparently a synonym 

 of this species. 



Tachina hybreas {ibid. p. 785. — Hudson's Bay). — The head 

 of the type is missing;: diseal a^ well as marginal macro- 

 ehsetse are present on the abdomen, and the species may 

 ])erhaps be referred provisionally to Ceromasia, — sensu 

 Hr. & von Herg. 



Tachina cjiicydes {ibid. p. 786. — Huds( n's Bay). — Genus 

 Exorista : Walker's name is ^ivcn by Aldrich (op. cit. 

 p. 455) as a synonym of Exorista {Tachina) a(J\nis, Fin., 

 but the shape of the third joint of the antenna in Walker's 

 type does not agree uith Fallen's description. 



Juriniu innuvata (Trans. Ent. Soc. Lond. new ser. vol. v. 

 (1861) p. 296. — Mexico) is doubtfully referred by Ahlrieh 

 [op. cit. p. 486) to Anhytas, but does not belong to that 

 genus, in spite of the fact that the proboscis is slender and 

 polished, with small labella. The sp cies must apparently 

 l)e assigned to the " Section " Eriyone, Br. & von Berg., in 

 which a new genus will probably have to be founded for it 

 near Ernestia, Rob.-Desv. {Erigone, olim). The head is 

 j)ropGrtionately somewhat ^mall j eyes bare; face hairy; 

 second joint of antennae somewhat elongate ; palpi small 

 and slender, orange, ncjt black as stated by Walker ; third 

 vein bristly for rather more than half the distance from the 

 ba>e to ihe small transverse vein. 



Tachina atra (Ins. Saund.— Dipt iv. fl852j p. 273.— 

 Cicorgiaj is correctly given by Aldrich {op. cit. p. 485) as a 

 synonym of Archytas nterrima, Rob.-Dcsv. 



Masicera expergita (Trans. Knt. Soc Lond. new ser. \'ol. v. 

 (1861) p. 304. — Mexico) is a Deyeeria, Mg. {Medina of 

 Aldrich's Cataloguej, of which Deyeeria lonyipes, v. d. Wulp, 

 from comparison of the types, is a synonym. Apud 

 v. d. Wulp (Biol. Centr.-Amer., Dipt., Suppl. p. 485) 

 D. lonyipes is a synonym of D. (Optiso) niyrifacies, Big. 



