On the Boinlyliiil Fauna of South Africa (Diptera). 19 



space, but there is a very thin white stripe between them ; frons of 

 female comparatively narrow. The hairs of the occiput are dense and 

 shorter than in the allied species. Squamae yellowish, white-fringed ; 

 halteres white. All the bristles of thorax and abdomen are concealed 

 between the hairs and concolorous with them. Hind femora with 

 numerous yellow spines. Claws of the female not longer than those 

 of the male. 



BOMBYLIUS SESSILIS, Sp. nOV., $ . 



Very nearly allied to the preceding, but distinct by the entirely 

 black proboscis, by the much broader frous of the female and by the 

 more pointed first posterior cell. 



Type ? , a single specimen from Bushuianland, Henkries (Cape), 

 October, 1911 (B. M. Lightfoot). 



Length of the body 8 mm., of the proboscis 4 mm. Hairs of body 

 rather short, those on frons and face yellowish, on occiput and thorax 

 pale greyish, on the sides almost whitish ; there are no black hairs or 

 black bristles. Palpi yellow ; proboscis stout, black above and below. 

 Thorax entirely greyish black ; scutellum red, with a black base. 

 Squamae and halteres whitish. Abdomen black, the hind border of 

 the segments and the venter reddish. Legs entirely yellow, with the 

 two last tarsal joints black ; hind femora with 7-8 sti-ong, yellow 

 spines ; claws of female short. Wings entirely hyaline ; the veins 

 are disposed as in the preceding species, but the first posterior cell is 

 so pointed and so prolonged to the hind border that it is almost 

 without a stalk. 



BOMBYLIUS XANTHOCERUS, sp. nov., . 



Very closely allied to mundus, but distinct on account of the 

 entirely red antennae, entirely black proboscis, longer occipital hairs, 

 entirely black abdomen and the obtuse and long-stalked first posterior 

 cell. 



Type <^ , a single specimen from Bushmanland, Een Kiet (Cape), 

 October, 1911 (R. M. Lightfoot). 



Head as in mundus, but the hairs of the occipital border are about 

 twice as long ; third antennal joint red like the others, with a hardlv 

 distinct terminal style; palpi yellow; proboscis black above and below. 

 Hairs of thorax and abdomen rather long and dense, entirely yellow, 

 like the less distinct bristles, and a little paler on the pleurae. 

 Scutellum red, narrowly black at base. Abdomen entirely black, even 

 on the venter, with the geaitalia red. Halteres with a white knob. 

 Legs entirely yellow, the last joints of the tarsi black ; hind femora 



