On the Boiiibi/Iil'f Funmt f South Africa (Diptera). 55 



femora have also white hairs below near the base, l>ut are destitute of 

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

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

 black, with narrowly yellow base ; pulvilli nearly wanting. Wings 

 entirely vitreous, only a little whitish at the extreme base 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 

 obtuse at end, its apical vein being longer than the discal cross-vein : 

 it is as long as the second posterior cell and much broader than the 

 mil-row and 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 

 t> 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 Morokweug (Bechuanaland) (J. M. Bain) : a female 

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



EURYCARENUS SBSSILIS, Sp. 11OV., g , 9 



Nearly allied to the preceding, but distinct from it and from any 

 other species owing to the silvery abdominal bands and the very 

 briefly stalked, almost sessile first posterior cell. 



Type <$ and type $ , a single couple of specimens from Inhambane, 

 Mozambique ; an additional male example from Bechuanaland 

 (G. Alston). 



Length" of body 8' 5-9 mm. ; of a wing 8-8'5 mm. Head black, with 

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

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

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

 areolets 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 



V / 



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

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



