LIST OF DIPTERA. ] 053 



• Var. Mas. Nigro-cyanea, canescens, palpis nigris, an- 



tennis ferrugineis , pedibus fuscis,femoribus posticis Jiavo trifas- 

 ciatis, tarsis nigris, alis limpidis fusco trifasciatis . 

 Body black : crown of the head beset with a few black bristles, 

 its sides dark blue ; sides of the face without bristles ; epistoma 

 prominent : eyes red, convex ; all the facets small : sucker black, 

 clothed with tawny hairs ; palpi black, beset with black bristles : 

 feelers ferruginous, shorter than the face ; third joint conical, longer 

 than the second ; bristle black, bare, very slender, pale tawny at the 

 base, about thrice the length of the third joint : chest and breast 

 bluish black, with a slight hoary tinge ; sides of the hind part of 

 the chest clothed with a few long tawny hairs : abdomen black, li- 

 near, narrower than the chest and nearly twice its length : legs dark 

 brown (middle legs wanting) ; feet black ; hind thighs adorned with 

 three yellow bands : wings colourless, adorned with three brown 

 bands, the first at one-third from the base, the second broad, the 

 third at the tip ; wing-ribs tawny ; veins black, tawny at the base ; 

 third longitudinal vein slightly curved upward, approaching near to 

 the second at the tip of the wing ; lower cross-vein near the tip of 

 the wing, very slightly curved outward, more than four times its 

 length from the middle cross-vein ; poisers tawny, with pitchy 

 knobs. 

 a. Congo. Presented by Sir J. Richardson. 



Calobita Aloa, n. s. C. fasciata var. ? Fern. Nigra, facie fer- 

 ruginea, abdomine cyaneo, palpis antennisque nigris, harum ar- 

 ticulo 3° basi ferrugineo, pedibus nigris, tarsis albis, femoribus 

 posterioribus fulvis, alis limpidis fusco trifasciatis. 

 Body black: head beset above with a few black bristles, clothed 

 beneath with short black hairs ; sides of the face without bristles ; 

 epistoma not prominent ; face ferruginous : eyes bare, dark red, 

 convex ; all the facets small : sucker black, clothed with tawny 

 hairs ; palpi black, beset with black bristles : feelers black, longer 

 than the face ; third joint slightly conical, rounded at the tip, fer- 

 ruginous at the base beneath, more than thrice the length of the 

 second joint; bristle bare, slender, much more than twice the length 

 of the third joint : chest beset with a few black bristles : abdomen 

 dark blue, somewhat lengthened, tapering towards the tip, thinly 

 clothed with short black hairs : legs black, clothed with very short 

 black hairs ; second, third and fourth joints of the feet white ; four 

 hinder thighs dark tawny : wings colourless, adorned with three 

 dark brown bands ; the first narrow at one-third of the length from 

 the base, the second very broad, the third at the tip, joining the se- 



4 y3 



