in the British Museum. 27 



Hab. Ashanti. 



Holotype, (J,Obuasi, June 8, 1907 (Dr. JV. M. Graham). 

 B.M. 1908. 245. 



Allotopotype, ? , July 5, 1907. 



Type in the eollectiou of the British Museum (Natural 

 History). 



A note by the collector indicates that these specimens 

 were "caught on window.' 7 



Tribe Eriopterini. 



Genus Erioptera 1 , Meigen. 



Erioptera (Erioptera) earissima, sp. n. 



Antennae pale brownish yellow ; head shiny black ; meso- 

 notal prsescutum obscure yellow with three stripes, the 

 median stripe reddish brown, the lateral stripes blackish; 

 halteres pale yellow at the base, the remainder brownish 

 black ; legs light yellow ; wings light yellow, with three pale 

 greyish cross-bands, the tip broadly pale ; male hypopvgium 

 with two pleural appendages, the inner one branched; 

 gonapophyses powerful, directed laterad. 



Male. — Length about 5*5 mm.; wing 5*3 mm. 



Female. — Length about 5"8 mm.; wing 5*4 mm. 



Rostrum and palpi pale brownish yellow. Antennae in 

 the male sex pale brownish yellow, in the female with the 

 flagellum a shade darker brown than the scape. Head 

 shiny brownish black, eyes of the male very large, broadly 

 contiguous beneath. 



Mesonotum highly polished, obscure yellowish, with three 

 broad stripes, the median stripe reddish brown, the lateral 

 stripes almost black ; scutum with the lobes shiny brownish 

 black, indistinctly margined with pale ; scutellum dull 

 brownish yellow ; postnotum with the basal half brown, the 

 posterior half almost black. Pleura with the dorsal sclerites- 

 deep chestnut-brown, the ventral sclerites yellowish ; a con- 

 spicuous china-white area on the mesepisternum, cephalad 

 and ventrad of the wing-root ; in the paratope, this area is- 

 scarcely evident. Halteres with the basal half of the stem 

 pale yellow, the remainder of the stem and the knobs dark 

 brownish black. Legs with the coxae and trochanters 

 light yellow; femora clear golden yellow; tibiae brownish 

 yellow; tarsi pale, the apical segments dark brown. Wings 

 light yellow, including a broad incomplete sub-basal band, 

 a broad band immediately before the cord, and the broad 



