I 



LIST OF DIPTERA. 363 



** Epistoma albo hiitum. - - leucops, Wied. 



ii. Abdomen uigrum. 



* Thorax alliido vittatus. - - virgatus, Wied. 



** Thorax non vittatus. - - atratus, Macq. 



h. Antennae rubidae, basi annuloque nigris. 



auuulicornis, JVestw. 



c. Antennae rubids, basi nigree. 



i. Abdomen nigrum. ... mystaceus, Wied. 



ii. Abdomen cbalybeum, medio nigrum, apicalis, Wied. 



B. Abdomen cupreum. . - . . nitidulus, Oliv. 



B. Abdomen fasciis pallidis. 



A. Pedes antici nigri. . - - . gracilis, Macq. 



B. Pedes antici flavi. . - - - notospilus, Wied. 



18. Mydas heros. 



Ater ; antennce feiruginecE ; abdominis segmenlum \um sulphureo 

 hirtum; alee antice testacece, casta et venis fusco-nigris. 



Midas heros, Perty, Delect. Anim. Artie. Bras, pi, 36, f . 11 . 

 Westw. Arc. Ent. i. 50, 1. * 



Brazil. 



19. Mydas dives. 



Niger ; antennce fulvce, basi nigrce; thorax vittis cinerascentibus ; 

 abdomen segmento \o aureo piloso, 2o aureo sericanie, reliquis 

 IcBte fjiirpureo-caruleis ; pedes longi ; aim fulvce basi nbscu- 

 riore margineq ue postico translucente. 



Midas dives, Westw. 

 Brazil. 



20. Mydas gig ante us 



Ater, thorax vittis dilutioribus ; abdomen chalybeum ; al<s mar- 

 gine interna apiceque fuscano-ftavidis. Mas. — Abdomen 

 chabjbceum ; aim cothurnatce vel fuscancB. Foem. — Abdomen 

 vix ccerulescens ; alee nigrm. 



Mydas giganteus, Thunb. 



Var. ? Mydas caerulescens, Oliv. Enc. Meth. viii. 81. 



a, b. RioTapayos, Brazil. From Mr. Bates' collection. 



