﻿On the Bombyliid Fauna of South Africa (Diptera). 165 



whitish knob. Abdomen elongate-conical, not broader than the 

 thorax, obtuse behind, black, with a red stripe on each side from 

 the 2nd segment to the end, the 7th segment being red with a 

 black basal median spot ; on the back it is clothed with black 

 scales, with reddish scales on the base of the 2nd and on the whole of 

 the 6th and 7th segments, but on the red stripes the scales are also 

 red; hairs of the sides long and red on the 1st and 2nd segments, 

 shorter and with intermingled black hairs on the remainder. Male 

 genitalia red and reddish-haired; venter entirely red, with reddish 

 hairs and reddish dust. Legs red, with reddish scales and black 

 spines ; coxae, end of the front tibiae and all the tarsi, except at the 

 base, blackish ; front pair abbreviated, with smooth tibiae and with 

 the tarsi rather bare above ; front coxae with reddish hairs ; middle 

 femora with 2-3, hind femora with a complete row of bristles ; claws 

 black, with an indistinct basal tooth. Wings short and rather bi-oad, 

 entirely and equally infuscate from the base to the end, and with a 

 vivid metallic sheen ; the hook and the small comb are of a deep black 

 colour ; praediscoidal spot almost indistinct. Veins black ; the loop 

 of the 2nd longitudinal vein is simple but deep ; submarginal cross- 

 vein very short, sti-aight, perpendicular ; the cell, charactei'istic of the 

 genus Hyperalonia, is twice as long as broad ; the first posterior cell is 

 not much narrowed at end, the 2nd is narrower than the 3rd at the 

 end, the vein between them being S-shaped and bent forwards at the 

 end ; third obtuse at the base, but only a little shorter than the 4tli. 

 Discoidal cell narrow, irregular, acute at both ends, its terminal vein 

 horizontal, V-shaped, as long as the equally V-shaped preceding vein; 

 discal cross-vein set m the centre of the discoidal cell, the upper vein 

 after it, strongly curved outwardly ; anal cell narrowly open ; axillary 

 •lobe rather narrow ; alula black, with dark fringe. 



Hypeealonia vittata, Ricardo (1901). 



A mainly reddish species, very distinct on account of its reddish 

 brown and dark spotted wings, which ai-e beyond the discoidal cell 

 strongly truncate at the base. 



Originally described from ISTyassaland and widely spread over East 

 Africa, there is a single male specimen from Salisbury (S. Rhodesia) 

 June, 1913. This example has all the general characters of tliis species, 

 but differs in two points : (1) There is a black spot on the occiput, 

 surrounding the postvertical furrow ; (2) the 2nd posterior cell of the 

 wings is rather constricted at end. Owing to these two characters the 

 specimen makes a passage to the form which I have described from 

 East Africa under the name of H. paris. 



