Generic Position of certain Mu-iciJa\ Ml] 



mouldy, so that it is not easy to make out its characters ; 

 the face, however, on eacli si.le has a row of stout bristles 

 descending from the front. The apical portion of the fourth 

 vein and the posterior transverse vein are abruptly bent in 

 and out in an unusual manner ; the basal portion of the 

 third vein is bristly almost as far as the small transverse 

 vein ; abdominal raacrochaetre discal and marijiiial. 



Snrcophaya chrysotehis (Ins. Sauiid. — Dipt. iv. (185.2) 

 p. 321). — S. America) is an Exorista. 



De.iia anrinia (List Dipt. Ins. Brit. Mus. iv. (18 19) 

 p. 817. — Locality unknown) =Dexia vacua, Fin., ? . 



Dexia posio (jbii. p. 811. — Cape of Good Hope) is a 

 Microphthahnd, Macq., with the first posterior cell closed 

 well before the margin of the wing, and long-stalked : owing 

 to this peculiarity in the venation it may eventually be 

 advisable to found a new genus for this species. 



Dexia australis (Ins. Sauud. — Dipt. pt. iv. (1852) p. 314. 

 — Australia) is a Thelaira. 



Dexia notata [ibid. p. 309. — New Soutli Wal3s) is a 

 Myiostoma, Rob.-Desv. 



Dexia randa (List Dipt. Ins. Brit. Mus. iv. (1849) p. 852. 

 — Brazil) belongs to the genus Mesembrinella, Giglio-Tos. 



Dej'ia ohscura (Ins. Saund. — Diptera, pt. iv. (1852) p. 307. 

 — Brazil) . — Genus uncertain, probably new {" Section " Dcjia, 

 Br. & von Berg.). — Arista feathered with long hairs; septum 

 between antennae and grooves for latter well-marked ; pro- 

 boscis slender, polished, and somewhat elongate ; abdominal 

 macrocluetje marginal on second segment, discal and marginal 

 on third ; terminal portion of fourth vein bent up sharply, 

 then incurved ; bend with a small appendix. — In spite of the 

 greater development of the facial septum and of the au- 

 tennary grooves, this species is probably congeneric with 

 Rhamphinina picta, Bigot (Ann. Soc. Ent. Fr. ser. 6, t. viii. 

 (1888) p. 205), from Cuba, the type of which, through the 

 generosity of Mr. G. H. Verrall, is now in the British 

 Museum. According to Brauer (SB. k. Akad. Wiss., 

 math.-naturw. CI., Bd. cvi. (1897) p. 359. 105) Rh. picta, 

 Big., with Deuia potens, Wied., belongs to Stomatode.rin 

 according to the head, and to Leptoda according to the Ix iid 

 of the fourth vein. The proboscis, however, is very diftVrcnt 

 from that of Stomatode.iia. 



Dexia muscaria (ibid. p. 308. — Brazil) is congeneric with 

 the foregoing, though discal and median marginal macro- 

 cluetre are absent from the second abdominal segment, and 

 discal macrochffitK from the third segment. 



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