﻿Bomhyliidae {Dictera) from Central Africa. 651 



Davey), Avhich agree well enough with this Mediterranean 

 species. 



72. Exo'prosopa hypomelacna, sp. no v. 



$ . Length of tlie body 10 mm., of the wing 8 mm, 

 A small species with hyaline wings, very closely allied to the 

 preceding but differing in tlie following points. 



Third antennal joint broad at the base, afterwards attenuated into 

 a point, which ends in a style as long as this point. Lower half of 

 pleurae and breast clothed with black hairs. The four front tibiae 

 are yellow. Wings with the base and the costal cell only a little 

 grey, almost hyaline ; the direction of the veins is the same, but the 

 anal cell is more narrowed at the end. 



Type % from West Nyasa, Chinktu, October 1909 

 {Dr. H. S. Stannus) ; a single not well preserved specimen. 



73. Exoprosopa C^) inornata, Loew (1860). 



A single specimen of very doubtful determination, from 

 West Nyasa, Limpachi River, November 1909 (Br. H. S. 

 Stannus). 



74. Uxoprosopa sp. indet. 



A single badly preserved and wholly denuded specimen 

 of a species very near U. iris, Loew, from North Nyasa, 

 Fort Hill, September 26, 1909 (Dr. J. B. Davey). 



16. Hypcralonia, Rondani (1863). 



This genus seems to be somewhat plentiful in South 

 Africa; in the collection there are four species, which 

 belong to two very distinct groups. 



The first group embraces the species which have red, 

 more or less darkened, legs and extensive brown markings 

 on the wings, which are often all darkened and with strong 

 metallic reflections. Hind claws with an obtuse tooth. 

 Discal cell very much twisted, pointed outwardly, the vein 

 dividing it from the second posterior cell being very 

 sinuous and placed almost in the same direction as the 

 axis of the wing ; second posterior cell broader at base 

 than at apex. To this group belongs the species H. riifa, 

 Wied., from the Cape ; vittata, Ric, from Nyasa ; nigri- 

 pennis, Loew, from Mozambique ; helena, Loew, from 

 Egypt, and venus, Karsch, from Zanzibar. 



To the second group belong the species which have 



