﻿Oil till' TioinhijJiid Fdiniii of Sovflt Africa (Dijifera). 125 



4 (3). A broad bi-own spot at the base of the culiital fork ; abdomen with 

 yellow hind borders and with tufts of black, scaly hairs on aides. 



puiictipennc, Wied. 



Spongostylum muticum, sp. UOV., (J , 9 . 



Closely allied to the followiuo- species, but Jistiuo-uislied Ly the 

 characters of the venation and by the somewhat different wiui;' 

 pattern. 



Type (^ and type $ from Bushmanland, Jackal's Water (Cape), 

 October, 1911 (R. M. Lightfoot) ; a ^ from Een Riet (Cape), 

 October, 1911 ; a 9 from Namaqualand, August, 1878 (R. Trimen). 



Length of body 8 10 mm. ; of wing 9-11 mm. ; of the wing spread 

 21-2(3 mm. A description is not necessary, because this species is 

 almost similar to hicisurale, of which it may be perhaps only a 

 variation. But in the wings tliere are important differences :— («) in 

 venation : Tlie origin of the second vein takes place at a considerable 

 distance before the discal cross-vein, this distance being, however, 

 shorter than the length of tlie discal cross-vein ; this cross-vein is 

 placed nearer to the middle of the discoidal cell. The basal angle of 

 the second vein is rounded and witliout recurrent veinlet, or exception- 

 ally only with a very short stump ; the uj)per branch of the cubital 

 fork is likewise rounded at base, and very rarely provided with a 

 rudimentary stump, (fc) In pattern : The brown spots on the cross- 

 veins are broadened to form short bauds, recalling the pattern of *S'. 

 trifasciatuin, Wiedemann. The costal cell is dark in its whole length : 

 the base of the wing is brown right to the humeral cross-vein, ending 

 in an oblique line extended from this cross-vein to the axillary incision ; 

 the abbreviated band below the origin of the third vein extends to the 

 sixth, filling out the end of the second basal cell ; sometimes the 

 2 basal cells and the base of the marginal cell are entirely filled with 

 brown, thus reproducing the Anthrax wing pattern. 



One ? specimen from Jackal's Water has the wings wholly 

 hyaline, pale yellowish toward the base, and without any distinct dark 

 pattern, except the grey praediscoidal spot ; the discal cross-vein is 

 placed much before the middle of the discoidal cell, as in incisurale, 

 but the curvature of the base of the second vein and of the cubital 

 fork are as in the type. I give a name to this interesting variation, 

 namely var. elutuin, var. nov. 



Spongostylum incisurale, Mac«|uart (1840). 



A common and variable species, distinguished by having only 2 or 3 

 dark spots on the wings. 



