76 SOUTH-AFRICAX BUTTERFLIES. 



c. GriqualanJ West. — Ivimberley. 



d. Basutoland. — Maseru (./, H. Boivl(er). 



C. Orange Free State. — Locality not noted (C. Hart). 



D. Kafi'raria Proper. — Butterworth and Basliee River (J. H. Boicker). 



E. Natal. 



b. Upper Districts. — Karkloof (TT". il/ora??/). Grey town. INfaritzLurg. 

 Estcourt (./. M. HidcJmison). 

 K. Transvaal. — Potchefstroom District (T. Ayres). 



Genus HEEPiENIA. 



Herpcenia, Butler, Cist. Ent., i. p. 52 (1S70); Proc. Zool. Soc. Lond., 



1872, p. 67. 

 Pieris (Auct. — part.), Trimen, Rliop. Afr. Aust., i. pp. 26 and 40 (1862). 



Imago. — Nearly allied to Pieris. Palpi much shorter, especially 

 terminal joint ; antcnnce shorter, more slender. Pore-'ivings apically 

 rather prominent (esj^ecially in $) ; posterior angle well marked ; first 

 and second subcostal nervules given oft' not far apart, at some distance 

 before extremity of discoidal cell ; upper radial nervule longer, united 

 to subcostal nervure at a point considerably nearer to extremity of cell ; 

 upper disco-cellular nervule exceedingly short, slanting inward, — lower 

 one very long, strongly curved inward in middle ; discoidal cell thus 

 terminating very truncately ; second and third median nervules nearer 

 to each other than second and first. Hind-ioings more elongated supe- 

 riorly, shorter and sub-truncate inferiorly ; anal angle rather pro- 

 nounced ; disco-cellular nervules almost as in fore-wings. Abdomen 

 more elongate, particularly in ^, where it is very slender and is only a 

 little shorter than inner margins of hind-wings. 



The characters here given (of which the more important were 

 pointed out loc. cit. by Mr. Butler) serve well to separate this genus ; 

 and its very remarkable and peculiar pattern is a character which 

 emphasises the structural ones. The creamy-white or yellowish ground- 

 colour is boldly and conspicuously broken up by not only very broad 

 hind-marginal black borders enclosing spots of the ground-colour, but 

 also by a very broad longitudinal black bar in the fore-wings (occupy- 

 ing base and discoidal cell, and joining the hind-marginal border about 

 its middle), and a narrower obliquely transverse sub-basal black bar in 

 the hind-wings (the superior extremity of which is linked to apical 

 commencement of hind-marginal border by a costal and a subcostal 

 short black ray). Both structure and pattern indicate approach to the 

 genus Tcracolus ; in the fore-wings the disposition of the subcostal 

 nervules being the same, and that of the upper radial and disco- cellular 

 nervules almost the same ; and the singular arrangement of wing- 

 markings is not far different from that found in the ^ T. Evenina, 

 Wallengr. 



Mr. Butler has given names to several slight modifications of what, 



