knoion forms of South African Butteoflies. 235 



external series of orange elongate marks forming an almost continu- 

 ous streak broken only by the crossing dark nervules. Under-side. 

 —As in ^ . 



(Described from 4 examjjles.) 



From Z. zeuxo (Linn.), this interesting species is dis- 

 tinguished by its rather redder and less metallic upper- 

 side, with the hind-marginal border considerably narrower 

 and in the fore-wing bearing an external series of marks 

 of the ground-colour ; and also by its much paler and 

 ferruginous-tinged under-side, with the markings of the 

 hind-wing larger and sub-ocellate (especially the discal 

 series, which is composed of contiguous spots) ; the out- 

 line of the wings, moreover, presents a more decided sub- 

 apical prominence in the fore-wing and a much more acute 

 anal-angular projection in the hind-wing. In these parti- 

 culars of outline Z. Fdthami agrees very closely with Z. 

 chri/saor, Trim., but differs in its very much less metallic 

 upper-side, with the hind-marginal border considerably 

 broader in the fore-wing and externally marked with 

 orange ; and also in the under-side, where (although the 

 ferruginous-tinged isabelline colour is the same) the large 

 sub-ocellate more or less contiguous markings are altogether 

 unlike the minute widely separated and more irregularly 

 disposed spots borne by Chrysaor. It is worthy of note 

 that the variable hind-marginal series of orange marks 

 alonof the outer edcje of the black border of the fore-winsf 

 is a near approximation to the corresponding lunulate 

 orange edging so characteristic of Z. thysbe (L.), Z. Oshccki, 

 Auriv., and Z. pahnus, Cram., in the next group of the 

 genus. 



Mr. Feltham, after whom I have the pleasure of naming 

 this butterfly, has sent me full notes of his experiences 

 respecting it, and I give here a summary of them. The 

 first example was taken on 18th April, 1900, on the sand 

 dunes just beyond the mouth of the Muizenberg Vlei in the 

 Cape Peninsula, and on the 27th October following four 

 others were captured among the sand-hills near Retreat 

 Station ou the railway between Wynberg and Muizenberg. 

 Subsequent captures in the same locality were as follows, 

 'oid. : — in 1900, five on the 10th November, three on the 

 22nd November, two on 15th December; in 1901, two on 

 8th February; and in 1902, one on 1st December, Visits 

 to Retreat on 21st December, 1900, and on 2nd and 12th 



