in the Collection of W. W. Saunders^ Esq. 139 



with some testaceous marks on more than half the surface from 

 the base, the brown part extending for three quarters of the 

 length of the costa to near the tip of the interior border, its out- 

 line with four indentations. 



Length of the body 33| lines ; of the wings 7 — 8 lines. 



Valley of Amazon. 



Group 6. Dipt. Saund. 166. 

 Anthrax decemmacula. 

 Nigricans, testaceo-hirta, capite postico sordide albido, ab- 

 dominis lateribus obscure fulvis, pedibus fulvis, alis sub- 

 cinereis fusco-decemmaculatis, basi costdque subfuscis. 

 Blackish ; head dingy, whitish behind ; thorax and abdomen 

 with short pale testaceous hairs and with rather longer hairs on 

 each side ; abdomen dull, tawny on each side ; legs tawny ; wings 

 slightly greyish, brownish at the base and along most of the length 

 of the costa, and with ten darker brown dots, which are on the 

 transverse veins or on the curves and angles of the other veins. 

 Length of the body 2 — 3| lines ; of the wings, 5 — 8 lines. 

 Valley of the Amazon. 



Anthrax conclusa. 



Mas. — Nigricans, fulvo-pubescens, abdominis lateribus basi 

 fulvis, apice argenteo, pedibus fulvis, tarsis nigris, alis 

 limpidis, basi peroblique fuscis. 



Male. — Blackish, with dull tawny pubescence ; proboscis and 

 antennae black, the former a little longer than the head ; sides of 

 the abdomen tawny towards the base, tip with silvery pubescence • 

 legs tawny, tarsi black ; wings limped, brown towards the base, 

 outline of the brown part very oblique, extending from full three 

 quarters of the length of the costa to the middle of the interior 

 border, and is contiguous to three black spots ; veins black j hal- 

 teres testaceous. 



Length of the body 4| lines; of the wings 10 lines. 



Valley of the Amazon. 



Like Group 5, Dip. Saund. 166, but with the hind legs 

 ciliated. 



Anthrax lurida. 

 Nigricante picea, ex parte ferruginea, nigro-hiria, pedibus an- 

 terioribus fulvis, posticis nigro dense ciliatis, alis luridis. 



