204 



Dr. F. A. Dixey on 



specimens captured in October. The large median spot 

 is always present, and there may be an indication of a 

 submarginal series on the hind-wing. The female is like 

 a wet-season or intermediate female of P. liliana, though 

 usually smaller. It always possesses on both surfaces the 



Fig. 19. — P. gerda, Gr. Sm. and Kirb. Spino of left clasper x 54. 



spot between the median and submedian of the fore-wing, 

 as in those forms, and the discocellular spots on fore- and 

 hind-wing. The claspers in a male from Voi (figs. 19, 20) 

 are curiously unsymmetrical; the right valve ending pos- 

 teriorly in a sharp spine like that of liliana from Mombasa, 



Fig. 20. — P. </> rda, Gr. Sm. and Kirb. Spine of right clasper X 54. 



and furnished, as in that form, with a terminal socket 

 from which protrudes a group of large chitinous bristles; 

 the left valve also ends in a spine, but this, besides being 

 shorter and broader, is entirely destitute of a terminal 

 socket. The uncus of the same specimen (fig. 7). though 

 like that of P. liliana, is more deeply curved. It may be 



