South African Biitterflies. 385 



Among a number of specimens reared from larvae feed- 

 ing on the common Fennel^ near Cape Town, by Captain 

 Sandford, R.B., was a female (kindly presented to" me 

 by that gentleman) in which most of the pale markings 

 on the left-hand wings are ill-defined and suffused, the 

 submarginal spots being wholly wanting in the hind- 

 wing, and almost obsolete in the fore- wing, while the 

 two disco-cellular spots in the fore- wing are completely 

 confluent. These peculiarities extend to the underside; 

 and the right-hand wings also have two or three spots 

 either quite or nearly obliterated. 



The very nearly-allied Indian species, P. EritJwnivs, 

 Cram. (Pap. Exot. iii. pi. ccxxxii. f. A, B) is readily 

 distinguished on the upperside by the broader and much 

 broken-up band of the hind-wings, and the want of any 

 blue ocellate mark in the red spot at the anal angle; 

 and on the underside of the same wings, by the black 

 sub-basal bar (so very broad in Demoleus) being merely 

 a narrow black streak, and by the much narroAver dark 

 space bounded by lunules beyond the middle. 



Fam. HESPERIID^. 



Genus Pyegus, Hiibner. 



Pyrgiis Diomus. 



Hopffer, in Peters' Reise nach Mossambique, Ins. p. 420, 

 pi. xxvii. f. 9, 10. 



In my Rhop. Afr. aust., p. 288, I doubtfully placed 

 Diomus as a variety of P. Vindex, but haVe since seen 

 reason to think that its differences from that insect 

 warrant its being held distinct. 



A single S from Maseru differs a little on the under- 

 side from Hopffer's figure, being paler and more inclined 

 to yellowish in ground-colour, particularly on the hind- 

 margin of hind-wings, where the transverse white line 

 shades imperceptibly into the unvariegated pale ground 

 beyond it; while the two transverse white stripes are 

 rather narrower and more oblique. In these respects, 

 the specimen closely resembles an example lately taken 

 in the Trans- Vaal Country by Mr. Ayres. 



