﻿J46 Annals of the South African Museiim. 



Abdomeu narrow and elougate, with parallel sides, red, the first segment 

 and a broad middle longitudinal stripe black ; it is clothed with blach 

 and yellow scales, and on the sides has short hairs which are pale 

 yellowish on the first and the fore part of the second and third 

 segments, black on the rest. Genitalia red and black, yellow-haired ; 

 venter pale red, with whitish scales and long pale yellowish hairs at 

 the base and in the centre. Legs yellow, the coxae and tarsi black at 

 tip ; they are clothed with yellow and black scales, and have black 

 bristles ; coxae with yellow hairs ; front pair less abbreviated, with 

 smooth tibiae; middle femora with 1-2, hind femora with 4-5 spines; 

 claws black, with a short tooth. Wings rather broad, uniformly but 

 not intensively infuscated ; the rounded dark spots are placed on the 

 base of the upper l)ranch of the cubital fork, on the discal cross-vein, 

 on the base of second longitudinal vein, on the root of the fifth vein, 

 on the fourth vein in the centre of the segment between the root of 

 the fifth and discal cross-veins, on the upper exterior angle of the 

 discoidal cell, before the apex of the fourth vein, on the extreme inner 

 base of the 2nd and ord posterior cells and on the base of the 4tli 

 posterior cell. Hook black ; comb narrow, reddish, with black 

 bristles ; veins dark red, darkened outwardly ; alula short, transverse, 

 rounded, with dark fringe. Second vein with very deep double loop 

 at end ; marginal cross-vein S-shaped and much retreating ; upper 

 branch of cubital fork much retreating ; discal cross-vein placed on 

 the middle of the long and very acute discoidal cell. Fii-st posterior 

 cell broadly open, second long and narrower than the third at end, its 

 basal vein strongly V-shaped, but shorter than the basal vein of the 

 third cell, which is strongly bent basally ; third posterior cell very 

 long, but considerably shorter than the 4th at the base ; anal cell 

 broadly open ; axillary lobe rather broad and long. 



ExopRosoPA (Defilippia) venosa, Wiedemann (1819). 



Easily^ distinguishable by the wings being hyaline but strongly 

 reticulate in their apical and posterior part. 



This exclusively South African species is represented by a male 

 specimen from Cape Town, December, 1884 (T. D. Butler). 



ExoPROSOPA (Defilippia) nigrovenosa, Bezzi, sp. nov. 



Allied to the preceding, but entirely black and with black-haired 

 pleurae. 



Described in my general work ; there is a female from Durban, 

 April, 1913 (W. Haygai-th). The present species is possibly the same 

 as H. venosa, Macquart, nee Wiedemann. 



