﻿72 Amials of the South African Museum. 



Wings vei-y short and narrow, stalked at base, destitute of alula ; first 

 longitudinal vein straight, less looped at the end and not reti-eating ; 

 only two subniarginal cells. Upper branch of the cubital fork straight, 

 not at all retreating, running parallel with tlie l)order ; discal cross- 

 vein situated in the last third of the discoidal cell ; four posterior 

 cells, the 1st of which is closed and briefly stalked, the 2nd and 4th 

 are broadened, the 3rd narrowed at end. Discoidal cell very narrow, 

 with almost parallel sides, its terminal cross-vein l)eing straight and 

 only a little longer than the discal cross-vein ; anal cell open but 

 narrowed at end ; ambient vein complete. The supernumerai'y vein in 

 the anal cell placed in the concave fold just below the sixth vein, long 

 and very distinct, extending almost to the end of the anal cell. 



Type : Eurycarenus pachyceratus, Bigot, a species upon which, before 

 seeing the co-types, I have made many wrong speculations ; whence 

 the name, from oneiro.-i — di-eam. 



Onikomyia pachycerata, Bigot, 9 • 



A peculiar species with tliickly pilose head and thorax, at once 

 distinguished from any other by its generic characters. Bigot has 

 described it from the Cape in a recognisable manner, much better than 

 usually with him, and has pointed out that it must be the type of a 

 new genus In the collection there is a female specimen from Wama- 

 qualand, O'Okiep, October, 1890 (R. M. Lightfoot). Length of the 

 body 9-5-10 mm. ; of a wing G'8-7 mm. To Bigot's description may 

 be added : Occiput grey-dusted, but the vertex and the frons are 

 shining black ; the tuft of white hairs at the under side of the first 

 antennal joint is very long, and is fused with the tuft of the sides of 

 the frons and of the base of the cheeks, forming a sort of moustache ; 

 proboscis black, 5 mm. long ; palpi black, with pale yellowish hairs, 

 all the thoracic macrochaetae are yellow ; metapleural tuft pale 

 yellowish ; squamae dirty -yellowish, with sparse white hairs. Abdomen 

 at end with long and rigid black hairs. Venter black, grey-dusted, 

 densely clothed with white scaly tomeutum Avith some long white hairs 

 at base. The ground-colour of the tibiae and of the praetarsi of the 

 4 anterior h gs is yellow ; all tlie spines and spurs are yellow, but 

 on the hind tibiae, partly black ; hind femora with 3-4 short yellow 

 spines below at the end on the outer side ; claws pale yellowish red, 

 with black tip ; pulvilli dirty whitish. Wing-veins dark brown, pale 

 reddish at liase ; costa very thin at base, with scarce pale yellowish 

 scales. 



