74 Mr. A. W. J. Pomeroy on new 



Hab. Quick-flowing mountain-streams, obtained by- 

 rearing from pupa. 



hoc. Bangan, Kamerun, W. Africa, 14.2. 1916. Altitude 

 2200 metres. 



Type in the British Museum. 



Female. — Length 1*7 mm. 



Frons silver-grey. Antenna brown with grey .lusting, the 

 two basal joints yellow. Thorax lustrous black, covered 

 with strong golden pubescence. Pleura fuscous and lacking 

 the patch of soft hairs. Wings hyaline, radius unforked. 

 Abdomen : basal segment with fringe of long yellow hairs ; 

 second, third, and fourth segments with long golden hairs 

 dorsally and laterally, the last four segments shining purple- 

 black, with sparse black hairs and bristles. Legs : front 

 legs, coxae dark brown, with shiny masses of yellow hair ; 

 femora dark, with thick shining pale yellow hair on the 



4- 



Hind claws of Simulium, § , 



Fig. 1. — Simulium medustrformis, sp. n. Hiud claw of female. 

 Fig'. 2. — Simulium cervicorniitum, sp. n. 

 Fig. 3. — Simulium aureosimile, sp. n. 

 Fig. 4. — Simulium gihipes, sp. n. 



apical half, silvery in some lights ; tibiae yellow, dark brown 

 on apical fourth ; tarsi very dark brown, almost black. 

 Hind legs: coxae dark brown; femora dark brown; tibiae 

 hairy, basal half shining yellow, apical half dark purple- 

 brown; first tarsal joint yellow, but black at apex ; second 

 tarsal joint with marked excision near base; second, third, 

 fourth, and fifth tarsal joints all purple-black. Claws with 

 a large blunt tooth projecting from the base similar to 

 ■S. latipeSy Meig. 



Hob. Not found biting. Bred from pupa in swift 

 mountain-stream . 



Loc. Bangan, Kamerun, W. Africa, 14. 2. 1916. Altitude 

 2200 metres. 



Paratype in British Museum. 



Pupa. — Pupal filaments shaped like the antlers of an elk. 

 The filaments arise from the base in three main branches ; 



