I 
I 
50 SOUTH-AFRICAN BUTTERFLIES. 
disposed to think that Alba makes its appearance on the wing only in the \ 
winter or dry season. ^ 
Some dated specimens since received from Mr. Alfred D. Millar tend to 
confirm this view, a ^ having been captured on the 15 th August and three ^ s 
and a 9 on the 17th September 1887. It is not impossible that Alba may be 
the winter brood of Pigea. 
i 
Localities of Pieris Alba. 
I. South Africa. s 
E. Natal. S 
a. Coast Districts. — D'Urban (M. J. M^Ken,' J. H. Bowker). 
D'Urban District {T. Ayres). Malvern (J. H. Boioker). Pine- 
town ( W. Movant). Mouth of Tugela River (J. H. Bowker). 
254. (5.) Pieris Simana, Hopffer. 
$ $ Pieris Simana, Hoplf., " Monatsb. K. Akad. Wissensch. BerL, 1855, 
p. 640, n. 13 and Peters' Keise Mossamb., Ins., p. 354, t. xxiii. 
If. 3, 4[c?], 5, 6[?](i862). 
^ Pieris Pigea, Wallengr., K. Sv. Vet. -Akad. Handl. ; Lep. Rhop. Caffr., 
p. 7 \nec ? ]. 
Exp. al, ($) I in. 9^-ii lin. ; ($) 1 in. 11 lin. 
Very closely allied to Charina, Boisd. 
J Greenish-white with a bright pearly lustre; basal and marginal 
blackish markings quite as in Charina. Under side. — Almost without 
marking, as white as upper side ; the hind-wing and apex of fore-wing 
very rarely with the faintest tinge of yellowish, Fore-tving : terminal 
nervular black dots exceedingly minute ; terminal disco-cellular fuscous 
dot very minute; in Querimba specimen (apud HopfFer), a good- sized 
rounded, discal, fuscous spot, like that in between third and second 
median nervules. Hind-iuing : irroration either wholly wanting or 
extremely faint and limited ; spots of basal area and discal row very 
vaguely and only partly represented, the more constant and less indis- 
tinct being the spots below median nervure and the costal spot of 
discal row ; terminal disco-cellular spot distinct ; costa at base with 
more distinct orange-yellow edging line. 
$ More yellowish than $, and rather more so than $ Charina; 
blackish inarkings generally more develo'ped than in Charina. Fore-wing : 
basal dusky suffusion wider ; spots of costal streak beyond middle 
confluent, not separable ; hind-marginal spots enlarged and confluent 
into a quite continuous, rather wide border, with, acute inward nervular 
projections. Hind-wing : hind-marginal nervular spots larger than in 
Charina, sub-sagittiform, acutely-pointed outwardly. Under side. — 
1 Colonel Bowker has since forwarded three pairs taken in copula at Malvern, near 
D'Urban, in May 1888. Two of the 9 s are of the pale, more glossy, under-side colouring, 
while the third presents a deep ochre-yellow hue, and has the upper side of the hind-wings 
generally but unequally tinted with pale ochre-yellow. 
