280 Mr. F. Walker's Characters of undescribed Diptera 



pale liiteoiis ; pectus whitish; abdomen cinereous on each side 

 and beiiealli ; legs with rather long whitish bristles ; hind tarsi 

 with gilded tomentiim beneath ; wings blackish, black towards the 

 base along the costa; halteres white. 



Length of the body 3g lines; of the wings 7 lines. 



Mexico. 



Sub-Fam. LAPHRITES. 



Genus Lampria, Macq. 



Lampr'ia hllincta. 



Mas. — Nigra, capite antico ferrugineo, pilis subtus albidis, 

 abdomine fulvo depresso lineari, pedibus fulvis, femoribus 

 validis, tibiis posticis dilatatis arcuatis ciliatis, alis obscure 

 cinereis apud costam basalem luteis, halteribus testaceis. 



Male. — Black: head fen iiginous in front, with whitish hairs 

 beneath; proboscis poirect; abdomen tawny, flat, linear; legs 

 tawny ; femora stout, especially the hind pair ; hind tibiae dilated, 

 curved, ciliated ; wings dark grey, a little paler along the hind 

 border, luteous along the costa for more than one-third of tlie 

 length from the base ; hind branch of the cubital vein and first 

 externomediai vein united at some little distance from the border; 

 third and fourth externomediai veins united at some distance from 

 the bolder; sub-anal and anal veins united far from the border; 

 halteres testaceous. 



Length of the body 4 lines ; of the wings 8 lines. 



Amazon Region. 



Genus Laphria, Fabr. 



Laphria form'idolosa. 



Mas. — Nigra, .capite albo-piloso, mystace nigro, antennarum 

 articulo 3° fusiformi, thoracis vittis tribus angustis pectoreque 

 canis, abdomine rufescente lanceolate, ventre nigro, pedibus 

 validis albido-pilosis et nigro-setosis, alis nigricantibus, hal- 

 teribus pallide testaceis. 



Group of L. Amandus. See Cat. Dipt. 2nd Ser. iii. 5S3, 

 Male. — Black, with black hairs. Head with white hairs on each 

 side of the front, and beneath ; front prominent and with numerous 

 black bristles in the disk. Third joint of the antennae fusiform, 

 a Hctle longer than the first and the second together. Tliorax 

 with three slender hoary stripes. Pectus hoary. Abdomen red- 

 dish, lanceolate ; underside black and with black hairs, reddish 



