22 Dr. C. P. Alexander on African Crane-flies 



brown, the tips paler, the tergal valves very long ; almost 

 straight, slightly upeurved at the tips. 



Hob. Uganda. 



Holutype, ? , " Col. Cole's house, NTB, earl v morning," 

 November 1904 [Capt. E. D. TV. Greig). B.M. 1905. 310. 



Type in the collection of! the British Museum (Natural 

 History). 



Rhamphidva cacoxena, sp. n. 



Rostrum very long and slender, nearly as long as the head 

 and thorax taken together ; head grey ; mesonotnm black ; 

 pleura dark brown, the metapleura more brownish yellow; 

 coxse and trochanters black ; Avings iridescent, the apex and 

 stigma brown ; abdomen black, the last segment orange. 



Female. — Length (excluding rostrum) about 5*5 mm. ; 

 wing 5 mm. ; rostrum 1*4 mm. 



Rostrum very long and moderately slender, nearly as 

 long as the combined head and thorax; palpi dark brown. 

 Antenna? dark brown. Head grey. 



Pronotum brown. Mesonotum black. Pleura dark 

 brown, the dorsal pleurites and metapleura obscure brownish 

 yellow. Halteres dark brown, the base of the stem dull 

 yellow. Legs with the coxa? and trochanters dark brown ; 

 femora dark brown ; remainder of the le»s broken. Wings 

 subhyaline, the costal and subcostal cells and the wing-tips 

 darkened ; stigma dark brown, large, extending across cell 

 R x to vein i? 2+ 3 ; membrane iridescent. Venation as in 

 R. iris, but the basal deflection of Cn\ before the middle of 

 cell Is/ M 2 ; cell R 3 at the wing-margin but little wider than 

 ceil R lt 



Abdomen black, the genital segment and valves of the 

 ovipositor orange; valves of the ovipositor straight, the tips 

 a little upeurved. 



Ilab. Southern Nigeria. 



Holotype, ?, llesha, August 17, 1910 {Capt. L. E. H. 

 Humfrey). " Caught in house." 



Presented by the Entomological Research Committee, 

 1911.422. 



Type in the collection of the British Museum (Natural 

 History). 



Rhamphidia cacoxena very closely resembles R. iris, of which 

 it appears almost as a miniature; the different coloration of 

 the posterior sclerites of the mesonotum will separate the 

 two species. 



