﻿Èomhyliidae (Diptera) from Central Africa. 641 



short and sparse black hairs. Antennae with the first two joints 

 of a red colour ; first joint very long ; third joint in the shape of an 

 elongate cone, as long as the first two together and bearing a style 

 shorter than itself. Proboscis black, long, but not projecting. Thorax 

 black ; with the exception of the black bristles, all the other hairs 

 seem to be yellowish, and those on the metapleura also. Squamulae 

 of a dark colour, with a yellowish fringe ; haltères with yellow knob 

 and dark stalk. Scutellum black, reddish at the hind margin, with 

 black marginal bristles. Abdomen black, reddish on the sides of 

 second and third segments and yellowish on the venter, which 

 has only the basal portion of the segments darkened; third seg- 

 ment with entire transverse band of white tomenlum, fourth and 

 fifth with interrupted bands, the others seem to be all covered 

 with white tomentum ; sides with black hairs. Legs wholly 

 black, with black pubescence and black bristles, but the hind femora 

 have yellowish tomentum towards the base ; ungues long, with 

 a very strong tooth. Wings hyaline, one-half brown ; the limit 

 of the dark fore border runs obliquely from the end of the second 

 longitudinal vein along the middle of the discal cell to the base 

 of the fourth posterior cell and to the middle of the anal cell. 

 Prediscoidal spot greyish ; third longitudinal vein very curved at 

 the end ; first posterior cell not narrowed ; the second vein beginning 

 opposite to the small cross-vein ; second, third and fourth posterior 

 cells of about equal width. Discal cell longer than in E. dimidiata 

 and much narrower towards the base; the vein dividing it from the 

 second basal cell very strongly S-shaped. 



Type ^, from West Nyasa {Dr. H. S. Stannm) ; a single 

 specimen. 



55. JExojJvosopa dimidiata, Macquart (1846). 



I here follow Loew's definition of this species ; but it 

 seems that the African fauna is very rich in allied species, 

 some of which are very difficult to distinguish. 



The third antennal joint, which was wanting in Loew's 

 specimen, is of short conical shape, equal in length to the 

 first two joints together and as long as the style which it 

 bears; the first joint is short and black. Loew says that 

 the pleurae bear also some black hairs, which, however, in 

 the second specimen are sparse ; in my specimen there 

 are no black hairs ; as stated by Loew, the metapleural 

 tuft is always yellowish. 



A single specimen from Uganda, Peta, December 15, 

 1910 (d C. Goivdey). 



56. Exoprosopa discriminata, sp. no v. (Plate L, fig. 15.) 



