On the Bonibyliid Fauna of South Africa (Dipt era}. 35 



near tlie base. Wings with the ueuration as in the two preceding 

 species, but the discal cross- vein before the middle of the discoid al 

 cell, and the upper branch of the cubital fork usually provided with a 

 short stump near the base. The six fuscous spots on the cross-veins 

 and bifurcations are much less developed, but always distinct. 



The present species is somewhat aberrant owing to the unusually 

 broad f rons of the female, which thus approaches that of the following 

 group ; but the antennae are not widely separated at the base. 



(D) GROUP OF B. SENEX. 



To the present group I refer the species which are like the South 

 European B. senex ; they have a rather elongate, ovate body, the eyes 

 of the male are separated, the frons of the female is very broad and 

 long-haired, but with the bristles much less distinct than in the tuicans 

 group. The antennae are rather distant at the base, with the first 

 joint distinctly thickened much more thickened than in any other 

 group of the genus BombyUus. The mouth-opening is very broad, 

 and around it there is a very prominent and large praelabrurn, which 

 is differently coloured, from the face and the peristorne ; the face, 

 besides, is very short. Hind femora without bristles at base, under- 

 neath provided with long hairs alone ; in senex there are some bristles 

 near the end, which are wholly wanting in the North African se pared us, 

 Beek, as in the new South African species here described. Wings 

 rather narrow, with the discal cross- vein placed on the last third of 

 the discoidal cell ; basal comb very indistinct, almost wanting ; there 

 is usually a rather long, recurrent stump at the base of the upper 

 branch of the cubital fork. 



BOMBYLIUS HIRTICEPS, sp. uov., $ . 



Closely allied to separatus, Beek, from Tunis, but distinguished by 

 the darker hairs of the face, by the absence of the stump at the base 

 of the cubital fork, and by the shorter claws. 



Type $ , and another specimen of the same sex from Fraserburg 

 (Cape), June, 1885 (E. G. Alston). 



Length of body 8 - 5-10 mm. Head black, grey-dusted ; frons very 

 broad, about three times as broad as the eye, very long-haired, but 

 without distinct bristles ; the hairs on f rous, face and geuae are mostly 

 black, but towards the middle line there are numerous yellow hairs. 

 Antennae black, of the usual length of the preceding group, but of a 

 peculiar structure ; the first joint is distinctly thickened, grey-dusted, 

 clothed with long black hairs ; the second joint is ovoid ; the third is 

 long and thin, a little longer than the first linear, but at the extreme 



