﻿Bombyliidae {Di-pterci) from Central Africa. 645 



segments ; genitalia dark yellow ; venter dark, with black and pale 

 hairs. Legs dark reddish, with black pubescence and black bristles. 

 Wings with black veins ; discal cell twice as long as broad, narrowed 

 towards the middle, obtuse at the end ; first posterior cell little 

 narrowed. The wings are blackened from the extreme base to the 

 end of the first longitudinal vein ; from here the border runs 

 obliquely and sinuously to the vein dividing the second from the 

 third posterior cell at the hind margin of the wing; apex of the 

 first submarginal cell hyaline, as also the apical half of the second 

 posterior cell ; a small hyaline oblique spot in the discal cell before 

 its end; third and fourth posterior cells each with a hyaline spot 

 near the hind margin, which are fused together and in contact with 

 the spot in the discal cell; apex of the axillar cell subhyaline. 

 There are small yellowish spots at the cross-veins, chiefly on the 

 small cross-vein and on the base of the second longitudinal vein, 

 which originates a little before it ; prediscoidal spot small, whitish ; 

 small cross-vein placed before the middle of the discal cell. 



Type $, from Northern Nigeria, Zungeru, February 5, 

 1910 {Dr. J. W. Scott Macfic) ; a single specimen. 



62. Exoprosopa lacta, Loew (1860). 



A very well characterised and elegant species, distin- 

 guished by the prevalent yellow colour of the body, the 

 rounded and not projecting face, the brown and yellow 

 pattern of the wings, showing broad pellucid spots on the 

 cross-veins and two broad blackish bands fused together 

 at the hind margin. 



A specimen from North Nyasa, Makongwa, February 12, 

 1909 {Dr. J. B. Davcy). 



63. Exoprosoiia 'jiunctulata, M.a,c(\\mri {\^^0). (Plate L, 

 fig. 21.) 



This species is, without any doubt, the same as that 

 described by Loew under the name of E. rasa (1860). It 

 represents the type of a natural group of closely allied 

 species, with which are to be associated the following : 

 E. major, hatrachoidcs, stannusi and capnoptera. The 

 characters of this group are : — 



Abdomen of conical shape, pointed at end ; body elongate, short- 

 haired, without black hairs on the pleurae, and without silvery spots 

 or bands on the abdomen ; face little projecting; third antennal 

 joint of conical shape, bearing a style not longer than itself; pro- 

 boscis short. Wings rather narrow and long ; the vein dividing the 



TRANS. ENT. SOC. LOND. 1911. — PART IV. (JAN.) U U 



