﻿On the Bombi/lHd Fauna of South Jfrica {Diptera). 75 



more iuteusivein the second basal cell, but not as sirikiugly as shown 

 in Wiedemann's figure. The veins are intensely rufous, as in the other 

 species of the genus. 



CoRSOMYZA PENNiPEs, Wiedemann (1820). 



Nearly allied to the preceding species, but distinct from it owing to 

 the short first antennal joint and by the white- and yellow-haired pleura, 

 and distinct from any other on account of the densely and long- 

 feathered hind tibiae. Wiedemann has described the female from the 

 Cape ; there is in the collection a male from the Cape, without precise 

 locality. C. pennipes of Macquart, " Suites à Buffon," is doubtful, 

 because the author says that the femora (and not the tibiae) have long 

 hairs. 



Head exactly as in the preceding species ; the first antennal joint is 

 less than one-third of the third, and of a similar shape, which is very 

 different from that of tlie species following. Eyes more broadly 

 separated; the middle frontal furrow is even more distinct. Proboscis 

 black, shorter, only o-5 mm. long; palpi black, long, with much 

 longer and dense, almost leathery hairs. Pleurae destitute of black 

 hairs ; on the upper border of the metapleurae there is a rich tuft of 

 bright fulvous hairs, the other hairs being whitish ; lireast with pale 

 hairs. Coxae with yellowish or whitish hairs ; the feathering of the 

 hind tibiae is formed by dense and numerous, very proximate black 

 hairs, which on the upper side are longer and equally extended to the 

 end, while on the under side they are shorter and growing shorter 

 before the apex, which is bare ; even the hind tarsi are feathered ; no 

 other species has such a conspicuous feathering of the hind legs. 



Wings as in C. simplex, but clearer and with a very faint yellowish 

 tinge at the base and along the fore border. The venation is identical. 



CoRSOMYZA NiGRiPEs, Wiedemann (1820). 



Allied to the two preceding species, but distinguished l»y the wholly 

 black legs, by the black-haired first antennal joint, and by the facial 

 brush being surrounded by black hairs. 



Described from the Cape and subsequently recorded by Loew, 

 Schiner, Eicardo and Becker ; there are in the collection two males 

 from Cape Town, one of which, caught in 1874, is labelled by Bigot 

 " Lasioprosopa hi<jotli Macq. " ! The colour of the fvu- of the body in the 

 present species varies from bright fulvous to pale yellowish and shining 

 white. To Loew's good description may be added : Frontal furrow 

 narrow but deep. The shape of the third antennal joint in the present 



