PIERIN^. 
57 
much rounder hind-marginal spots, not acuminate inwardly (or united 
by the festooned line often found in Zoclialia). On the under side 
(4) the yellow colouring is much brighter; (5) the fore-wing has a 
basal flush of orange, and (6) only four separated submarginal spots 
instead of a continuous band ; while in the hind-iving (7) the nervures 
are much more narrowly black, and (8) the cellular strife and festooned 
submarginal line are wanting. 
From Ccdypso the butterfly is readily separated by its smaller size 
and much narrower black border of the fore-wings, as well as, on the 
under side, by its black nervures and very much smaller submarginal 
black spots of the hind-wing, and the want in the same wing of the 
conspicuous terminal disco-cellular black spot. In the ^ there is no 
resemblance to that of Calypso, which has a broad dusky border, and 
ground suffused with yellow and grey, — much like those presented by 
the darker $ s of Gidica, Boisd. 
The male above described was sent to me by Mr. Walter Morant in 1869, 
and I then made a description and drawing of the specimen, whicli the captor 
believed was taken near Pinetown, in Natal, where he was resident at the 
time. The $ here described and figured was taken by the late Mr. M. J, 
M'Ken at D'Urban in 1866; but being unset, and, I believe, on the same pin 
with several other butterflies, had escaped notice in a collection received by the 
South- African Museum. 
It occurs to me as not impossible that this may be the butterfly referred to 
Calypso by Boisduval in the Appendix to Delegorgue's Travels (p. 586), witli 
the habitat of Port Katal, — the 9 Ogygia having been taken for the $ Calypso. 
No South- African specimens of the latter species have ever come under my 
notice. 
Localities of Fieris Ogygia. 
I. South Africa. 
E. Natal. 
a. Coast Districts.— D'Urban {M. J. M'Ken). Pinetown (IF. 
Movant). 
258. (9.) Pieris Zochalia, Boisduval. 
Pieris Zochalia,, Boisd., Sp. Gen, Lep., i. p. 506, n. 100 (1836). 
$ ,, Trim., Rhop. Afr. Aust., i. p. 37, n. 22 (1862). 
Plate X. fig. 6 (?). 
Exp. al, ($) 2 in. ; ($) I in. i i lin.-2 in. 3 lin. 
$ White, ivitli Hack marhings. Fore-iving : costa from base nar- 
rowly black-edged ; basal half of wing with a hrilliant pearly gloss ; 
a short black terminal disco- cellular bar from costa, contracted in its 
middle portion ; a deep black band on hind-margin, narrowing to a 
poiut at anal angle, irregularly excavate on its inner edge, and gene- 
rally containing five sub-triangular white spots, of which the fourth is 
occasionally almost obsolete. Hiiicl-iving : generally a very short, thin 
