THE BLACK-VEINED WHITE 295 
marginal band, in others they are small, detached triangular 
marks. The cilia of the wings are extremely short. 
( Under Side.) The under side is similar to the upper, but 
more or less dusted with black scales. 
Female. (Upper Side.) The upper side is duller than in 
the male and usu¬ 
ally tinged with 
very pale ochreous. 
The wings are more 
or less semi-trans¬ 
parent, especially 
the fore wings; 
the nervures are 
pale brown. The 
marginal markings 
are paler than in 
the male. 
(Under Side.) 
The apex of the 
fore wing and the 
whole of the hind 
wing are tinged 
with ochreous- 
yellow and dusted 
with black scales 
as in the male. 
The antennae and 
legs are black, the 
former having 
orange tips; the 
thorax and abdo¬ 
men are grey. Black-veined Whites at rest. Sketched from life. 
Life of Imago. 
Apparently the life of this butterfly does not exceed twenty 
days. 
Aberration. Structural aberration sometimes occurs in the 
branching-off of additional nervures. Gynaridromorphism is 
exceedingly scarce, as in all the Pieridae. 
