76 
SOUTH-AFKICAN BUTTERFLIES. 
c. Griqualand West. — Kimberley. 
d. Basutoland, — Maseru [J. H. Boioker). 
C. Orange Free State. — Locality not noted (C. Hart). 
D. Kafi'raria Proper. — Butterworth and Basliee Eiver {J. H. BoivJcer). 
E. Natal. 
b. Upper Districts. — Kavklooi (W. Movant). Grey town. Maritzburg. 
Estcourt (J. M. Hutchinson). 
K. Transvaal. — Potchefstroom District (2". Ayres). 
Genus HEKP^NIA. 
Herpcenia, Butler, Cist. Ent., i. p. 52 (1870); 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 mucL shorter, especially 
terminal joint ; antennoe shorter, more slender. I'ore-wings apically j 
rather prominent (especially in $) ; posterior angle well marked ; first f 
and second subcostal nervules given off 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-wings 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 ajoical 
commencement of hind-marginal border by a costal and a subcostal 
short black ray). Both structure and pattern indicate approach to the 
genus Teracolus ; 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. PJvenina, 
Wallengr. 
Mr. Butler has given names to several slight modifications of what, 
