182 



Annals of the South African Museum. 



merits darker. Setae greyish white with very small black annula- 

 tions. Legs greyish. Wings greyish brown ; longitudinal nervures 

 darker ; costa and subcosta blackish ; cross-veins not very distinct. 



Length of body, 6 mm. ; forewing, 7-7 ''5 mm. ; setae, 12 mm. 



Three males, imagines, mounted on cardboard from Tulbagh, 

 April, 1892, and two females, subimagines (pinned), from M'fongosi, 

 Zululand, October, 1911, taken by W. E. Jones. 



FIG. 3. Forceps and Penis of Tricon/thus discolor. <? . 



The species is described by Burmeister from a female, subimago, 

 in Winthem's Collection, taken at Cape of Good Hope. The present 

 two specimens of subimagines agree very well with the description, 

 with the exception that the ventral surface of abdomen is more 

 blackish, and that the legs are more greyish. I am undoubtedly 

 right in referring the three males to the species. The neuration of 

 wings is quite the same. The colour of wings in the subimago is 

 blackish grey, in the imago brownish grey. 



GEN. CENTEOPTILUM, Eat. 

 CENTROPTILUM BIFASCIATUM, sp. nov. 



Imago. 3 . Head and thorax light brown, darker at the sides. 

 Abdomen vitreous in 2nd-7th segments ; the last segments opaque, 



FIG. 4. Fore (1), Intermediate (2), and Hindleg (3) of Centroptilum 



bifasciatum. 3 . 



reddish yellow. The dorsal surface of the first-named segments 

 with an oblong, reddish brown median spot, and an oblique spot 



