PIERIN^E. 27 
wing : black border well defined, about tlie same width as in Zoe, its inner 
edge forming sharper and more numerous dentations on nervules, its 
lower extremity becoming attenuated and suffused with yellowish scales, 
and terminating in a point on submedian nervure ; inner margin rather 
widely bordered with sulphur-yellow. Cilia without any rufous tinge, 
but mixed with greyish-brown in fore-wing. Under side. — Sulphur- 
yellow ; dark borders fai^itly indicated from upper side ; markings gene- 
rally arranged as in Desjardinsii, hut dusky -grey instectd of ferruginous, 
and very indistinct ; the subapical streak of fore- wing and upper discal 
streak of hind-wing usually altogether wanting, but sometimes faintly 
indicated. Fore-iving : no ferruginous tinge at apex or along hind- 
margin. Hind-wing : costal border finely and rather sparsely irrorated 
with blackish atoms. 
$ Sulphur-yelloiu, more or less sparsely irrorated ivith hlackish 
atoms ; fore-ioing border didler, but as broad, or nearly as broad, as 
in except just at posterior angle ; hind-wing border reduced, varying 
from a narroiv strip)e, forming strong nervidar projections inwardly, to 
a series of disconnected slender nervular marks. Fore-iuing : irroration 
most developed near base, along costa, and in upper part of discoidal 
cell ; a slight suffusion of gamboge-yellow over lower basi-inner-mar- 
ginal area, as in Desjardinsii. Hind-ioing : irroration scantier than 
in fore-wing, usually confined a little space close to base, but some- 
times extending over discoidal cell and below it. Under side. — As 
in but paler, and the subapical streak of fore- wing and upper 
discal streak of hind- wing usually more or less distinct and tinged with 
ferruginous, but never strongly marked as in Desjardinsii. 
I have not seen Mr. Butler's type of Regidaris, which he described 
from an Abyssinian collection of insects, but from his description I 
feel almost certain that it is identical with the ^ of the South- African 
butterfly here described. I also associate with Regularis two $ s from 
the coast of Tropical AVestern Africa, which are in the South-African 
Museum, and which only differ iu the broader black border of the 
wings (in the hind-wing especially, where it ends truncately above 
submedian nervure), and their somewhat more rounded outline. 
I wrote a description of this Terias in 186 1, from a ^ captured at King 
Wilham's Town by Mr. W. S. M. D'Urban in January of that year, but did 
not then, or for some years afterwards, think it sufficiently distinct from Des- 
jardlnisii to be more than a variety of that species. In 1867 I had the plea- 
sure of capturing a number of both sexes, both on the coast and in the inland 
districts of Natal, and was so fortunate as to take two pairs in copidd, — one at 
Fort Buckingham, on the Tugela, on the 8th March, and the other near Grey- 
town on the nth. The species was on the wing in February, March, and 
April, and Colonel Bowker took one near Maritzburg early in May. When 
flying, it is not distinguishable from T. Zoe. Mr. K. Lightfoot, of Cape Town, 
has shown me a small ^ received in a collection made near Plettenberg Bay, 
in the Knysna District, by Miss Newdigate in the year 1886. This is the 
only example I know of which has occurred so far to the south and west. 
