﻿Oil tin' Jhiiiihi/lii<l Fiiiiua of Hoiiili AfricK (Diptera). 15 



BOiMBYLlUS MOLLIS, sp. IIOV., (^ . 



Very distinct from all the other species of the present i;'ronp) on 

 account of the short hairs of the occiput and of the peculiar shape of 

 the second submarginal cell. 



Type ^ , a specimen from Salisbury (South Rhodesia), June, l!»lo ; 

 another badlv pi'eserved male specimen from Barbertou, Transvaal 

 (H. Edwards). 



The i)i'esent species is closely allied to the East African neithucrix 

 Jaenu. {appendiculatm^, Bezzi) and enjthroceriis, Bezzi (rufoanfennatas. 

 Beck). Length of body, 10 mm. ; of proboscis, 6 inni. Eyes con- 

 tii>uous for a distance a little longer than the vertical triangle. Head 

 black ; vertical and fi'ontal triangles black-haired, this last with some 

 shorter yellow hairs on the sides. Face with dense yellow hairs, only 

 beneath with a few black ones ; occiput with short yellow hairs ; the 

 dense hairs of the underside (jf the head are more pale-coloured. The 

 two basal joints of the antennae ai'e wholly l)lack and l^lack-haired, 

 the third is elongate and 1)1 ack, probosis entirely black ; palpi l:)lack, 

 thin. Thorax and scutellum deep black, clothed with equal and 

 «ntii'ely yellowish haiirs, without any black hairs even on the pleurae ; 

 there are no distinct bristles. Squamae brown, haltères with w^hitish 

 knob. Abdomen entirely deep black, without bristles, clothed with 

 equal yellowish hairs like those on the thorax, but on the sides of the 

 2nd, 3rd and 4th segments there are tufts of black hairs. Legs 

 yellow with black coxae, trochanters and tarsi ; but the praetarsi are 

 yellow^ ; spines of the hind femora black. 



Wings greyish, distinctly but very faintly infuscated at base to the 

 second l>asal cell and to the discal cross-vein ; comb very small, black ; 

 alula brownish, wàth whitish fringe behind ; veins entirely black ; 

 marginal cell rather broad in the last part ; first posterior cell very 

 acute outwardly and briefly stalked ; discal cross-vein a little before 

 the middle of the discoidal cell ; the cross-vein dividing the discoidal 

 cell from the second posterior cell is very short, and therefore the 

 discoidal cell is rather acute outwardlv. 



BoMBYLius Dis.jUNCTUs, Bezzi. 



Near B. mol I is, but very distinct from it and from all the other 

 species here recorded on account of the separated eyes of the male. 



The species seems to l)e widely spread throughout the whole 

 Ethiopian region, from Abyssinia tt) Natal ; there is a male specimen 

 from Salisbury, April 2-lth, 1917. 



