222 Mr. F. Walker's Characters of undescrihed Diptera 



Sub-fam. 2. Borborides. 



Genus BoRBORus, Meig. 



Borhorus Amazonicus. 



Foem. — Nigra, capite nitente, frontalibus atris, antennis, scutel- 

 loque piceis, pedibus validis longiusculis, tarsis dilatatis, alis 

 nigricante cinereis. 



Female. — Black ; head shining in front j frontalia deep black ; 

 antennae piceous, very small ; scutellum piceous ; abdomen dull ; 

 legs stout, rather long ; tarsi dilated ; wings blackish grey ; veins 

 black. 



Length of the body 3 lines ; of the wings G lines. 



Valley of the Amazon. 



Sub-fam. 3. Lauranides. 



SYNOPSIS. 



* Scutellum parvum. 



-f- Caput non transversum. Lonchcea, Fall, 

 ■f -f Caput transversum. Zygothr'ica, Wied. 

 * * Scutellum abdomen obtegens. Celyphus, Dalm. 



Genus Lonch^a, Fall. 



Lonchcea albimanus. 



Feem. — Nigro-senea, scutello ferrugineo, abdomine nigro-piceo, 

 pedibus piceis, tibiis posterioribus albido-fasciatis, tarsis pos- 

 terioribus albidis, alis lurido-subcinereis, venis testaceis, 

 halteribus albis. 



Female. — Blackish aeneous ; scutellum ferruginous ; abdomen 

 piceous black, shining ; legs piceous ; posterior tibiae with a 

 whitish band; posterior tarsi whitish; wings slightly greyish, 

 with a very slight lurid tinge ; veins testaceous ; halteres white. 



Length of the body 2^ lines ; of the wings 5 lines. 



South America. 



