On the BoiHlnjH'nl Fauna of South Africa (Diptera). 65 



Boml)y1iu8 brackyrrhynchus, sp. uov., taken at the same time and in 

 the same locality, and which has also a red proboscis. 



The ground-colour of the head is reddish, but it is concealed below 

 the white dust, which is very dense on the rather developed and 

 prominent occiput ; the soft hairs of the upper part of the occiput, the 

 bristly hairs of the ocellar tubercle, and those, likewise bristly, of two 

 tufts, set one on each side of the frons, are yellowish ; the other hairs 

 of the head are white or even silvery. Frons as broad as one-third of 

 the head. Antennae reddish, more or less iufuscated above ; the basal 

 joint with short yellowish hairs above and long white hairs below. 

 Proboscis entirely red above and below, with a black tip ; palpi pale- 

 yellow, almost bare; proboscis 4 mm. long. Thorax black, clothed 

 with yellowish and white hairs ; pleurae reddish, white-dusted, with 

 white and yellowish hairs ; inetapleurae with a tuft of white and 

 yellow hairs. Scutellum red, hairy like the thorax, and with yellowish 

 marginal bristles. Squamae brownish-yellow, white-haired ; halteres 

 yellow, with a whitish knob. Abdomen as in the preceding species. 

 Legs as in the preceding and even more spinose, but the femora are 

 not striped and only a little darkened below near the base ; pulvilli 

 well developed. The wings are very like those of the preceding species, 

 but there is no broad infuscation in the middle ; they are only yellowish 

 near the base and along the fore border right to the basal and 

 discal ci'oss-veius, which are sometimes narrowly margiuated with 

 fuscous. 



DISCHISTTJS TRIPUNCTATUS, Macquart (1840). 



Distinguished by the red proboscis and red antennae, by the deep 

 black body with dark fulvous pubescence and by the tripunctate 

 wings. 



The female was described as a Bonibylius from an unknown country 

 by Macquart. There is in the collection a male specimen from Nama- 

 qualand, Springbok (Cape), October, 1890 (R. M. Lightfoot). Not- 

 withstanding the differences the present species also may prove to be 

 the male of the preceding, as it was caught in the same locality and 

 at the same time. 



Length of the body 7 mm. ; of a wing 7 mm. Head black, but 

 densely clothed with a dark dust and by a short fulvous pubescence 

 which is destitute of black hairs ; occiput less developed ; beard scarce 

 and pale-coloured. Antennae approximate at the base, rather short, 

 of a dark reddish colour ; the first joint is more than 3 times as long- 

 as the second, and provided with tawny hairs ; third joint a little more 

 darkened above, linear, gradually attenuated, obtuse, not longer and 

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