312 Dr. C. P. Alexander on 
of the lobes dark ; scutellum and postnotum reddish brown, 
sparsely pruinose. Pleura light brown, sparsely pruinose, 
with two very narrow, brown, longitudinal stripes, the more 
ventral extending across the bases of the coxe. Halteres 
yellow, the knobs a little darker. Legs with the coxe 
yellow, the bases darkened by the ventral pleural stripe ; 
trochanters dull yellow; remainder of the legs yellow, only 
the distal tarsal segments darker; tarsal claws rather long 
and slender with one small acute tooth near mid-length. 
Wings pale yellowish subhyaline, with a heavy brown and 
grey clouding; five small dark brown spots along the 
anterior margin, the first at the base of ceil AR, the third at 
the origin of /’s, the fourth at the tip of Sc,, the last (stigmal) 
at 7, these spots smaller than the interspaces ; cord and 
outer end of cell lst M, seamed with brownish grey ; pale 
grey spots and clouds in all the cells, the areas being about 
as extensive as the pale spaces between; veins yellowish 
brown, C and Se more yellowish. Venation: Se, ending 
just before mid-length of As, Se. not far from its tip; Rs 
gently arcuated, a little more than twice the deflection of 
R445; rat the tip of R,; cell lst M, longer thanM,; beyond 
it; ma little more than one-half the outer deflection of Ms ; 
basal deflection of Cu, before the fork of M, the distance 
about equal to r—m. 
Abdomen dark brown, the hypopygium obscure yellow; 
sternites brownish yellow. 
Hab. Tropical Africa. 
Holotype, S, Obuasi, Ashanti, April 17, 1906, in house 
(W. M. Graham). B.M. no. 1907. 74. 
Allotopotype, ? , Oshogbo, Southern Nigeria (Dr. T. F. G. 
Mayer). Presented by the Ent. Research Comm. 1911. 422. 
Paratypes, 3, Aburi, Gold Coast, January 10, 1911 
(L. Armstrong); 3, Accra, Gold Coast, April 23, 1911, 
in latrine (Dr. A. Connal): presented by the Ent. Research 
Comm. 1911. 422. @, Bibiani, Gold Coast, October 1910 
(Dr. H. F. G. Spurrell) ; @, San Salvador, Portuguese 
Congo, August-October 1908 (Dr. M. Gamble): B.M. 
no. 1908. 266. ¢, Scottburgh, Natal, January. 
Type im the collection of the British Muscum (Natural 
History). 
R. pallidipes is obviously related to R. afra, Bergroth, 
R. miosema (Speiser), R. spadicithorax (Edwards), and other 
species of this group of Dicranomyia-like species of Rhipidia. 
Some of the specimens of the series have the legs consider- 
ably darker than the type. 
