﻿On tlw Jhiiiihi/JiiJ Fauna a/ SoiitJi Africa (DIpfcra). 5/) 



femora have also white hairs below near the base, but are destitute of 

 spiues ; the hind femora have 3-4 long spines below ; tibiae and tarsi 

 pale yellow, but those of the hind pair are distinctly «larlcer. Claws 

 black, with nari'owly yellow l>ase ; pulvilli neai-ly wanting. Wings 

 entirely vitreous, only a little whitish at the extreme liase and along 

 the fore border ; basal comb very small and silvery ; alula with a white 

 fringe ; veins pale yellow, darkened at end. Discoidal cell short and 

 olituse at end, its a^tical vein l)eing longer than the discal cross-vein : 

 it is as long as the second posterior cell and much brt)ader than tlie 

 narrow aud elongate first posterior cell, the veins of which are almost 

 entirely parallel. 



EURYCARENUS, Loew (1860). 



The species of this characteristic and rather aberrant genus seem 

 to be more abundant in mid- Africa. The present collection contains 

 only a few specimens of the typical species, and in addition there is a 

 couple of specimens of a new form from Mozambique. 



EuRYCARENUS LATICEPS, LoeW (1852). 



Dipteren-Fauna Sudafrikas, p. 187, pi. ii, fig. 7. 



A very distinct species on account of its generic characters. 

 A male from Morokweng (Bechuanaland) (J. M. Bain) ; a female 

 froui M'Fongosi, Zululand, December, 1914 (W. E. Jones). 



EUKYCARENUS SESSILIS, Sp. nOV., cj , 9 • 



Nearly allied to the pi-eceding, but distinct from it aud from any 

 otlier species owing to the silvery al)dominal bands and the very 

 briefly stalked, almost sessile first posterior cell. 



Type (^ and type 9 . '^ single couple of specimens from Inhamliane, 

 Mozambique ; an additional male example from Bechuanalan<l 

 (G. Alston). 



Length of body 85-9 mm. ; of a wing 8-80 mm. Head l)lack, with 

 whitish-grey dust ; occiput flat, with silvery tomeutum on the sides 

 beyond the lateral sinuosity of the eyes, and with white shiny hairs 

 above ; ocellar tubercle black-haired. Eyes of the male with the upper 

 ai-eolets broader, united on a line as long as the length of the ocellar 

 tubercle ; frontal triangle broad, with rather dense, erect black hairs, 

 and a few whitish -dusted in front; frons of the female broad, one- 

 third as broad as the head, yellowish-dusted, whitish near the eye 

 borders, with sparse black hairs near the antennae, and with 4 strong, 

 black, orbital bristles on each side, the apical one bent forwards, the 



