in the British Museum. 21 



HoJotype, ^, Mabira Forest, Cliagwe, altitude 3500- 

 3800 it.', July 16-25, 1911 [S. A. Neave). B.M. no. 1913. 

 140. 



Type in the collection of the British Museum (Natural 

 History). 



Dicranoptycha atricolor may he confused only with the 

 much smaller D. ?m/«/?rt, Alexander (Xatal), whicli is readily 

 told by the ])aler body-coloration, the yellow trochanters, 

 aud the different venatioual details as outlined above. 



Genus Rhamphidia, Meigen. 

 Rhamphidia iris, sp. n. 



Rostrum very long and slender, nearly as long as the 

 he;id and thorax taken together ; head grey ; mesonotal 

 ])rsescntum and scutum shin}' black, remainder of the 

 thorax orange-yellow ; coxse and trochanters black ; wings 

 iridescent, the apex and stigma brown ; abdomen black, 

 the last segment (m the female) orange. 



Female. — Length (excluding rostrum) about 8 mm.; wing 

 7 mm. ; rostrum 2 mm. 



llostrum very long and moderately slender, nearly as long 

 as the combined hc^ul and thorax, dark brown, the short 

 brown palpi at the tip. Antennae dark brown tliroughout, 

 the flagellar segments oval. Head dark, heavily light grey- 

 pruinose ; eyes large, the vertex between them very narrow. 



Cervical sclerites dark brown. Prouotum orange-yellow, 

 the anterior margin a little darkened. iVIisonotal prrescutum 

 and most of the scutum shiny black, the posterior margins 

 of thescutal lobes, scutcllum, and postnotum orange-yellow. 

 Pleura and sternum orange-yellow. Prosternnm rather 

 broad and extensive, narrowed anteriorly. Haltercs black, 

 only the extreme base of the stem yellowish. Legs with the 

 coxse and trochanters black, contiasting conspicncusly with 

 the liglit-coloured pleura ; remaind( r of the legs broken. 

 AVings subhyaline, highly iridescent, the costal and subcostal 

 cells a little darker ; wing-tip in cells /fj to i/3 darkened ; 

 stigma oval, dark biown ; veins dark brownish black. 

 Venation (a single wing preserved in the unique ty})e) : 

 Sc ending o|)[)osite the end of Rs, Sco at the end of .S^i ; 

 R.s long, almost :^traiglit ; bas;il detiection of i/i+g abuui 

 equal to m ; cell l.s/ M2 closed ; basal dcHection of Ciii a 

 little l)eyond mid-length of the cell 1st M.,. 



Abdomen black, tlu- genital segment orangr. Ovipositor 



