THE CLOUDED YELLOW 
335 
The ground colouring of the females varies from deep, 
rich orange to white. Between these forms every gradation 
of tone occurs, including lemon-yellow and buffish-yellow. 
These intermediate forms of lemon and pale buff are known 
as ab. hclicc , Hb., and the white or creamy-white ab. pallida, 
Tutt. These palest forms occur only in the female, no such 
coloured male is known to exist. The light yellow form 
occurring in both sexes is ab. chrysothemc , St. Speci¬ 
mens occasionally occur with the marginal bands suffused 
over the greater part of the fore wings. Sometimes, but rarely, 
the black markings are replaced by pale lilac-brown. Some 
years ago I bred a very rare male aberration, having the fore 
wings light golden-yellow and the hind wings greenish-black 
with a light yellow discoidal spot, ab. electra. 
In the great C. crocens year of 1877 some remarkable aberra¬ 
tions were captured, including a female with fore wings ab. 
pallida and hind wings normal C. crocens ; also another having 
the right pair of wings ab. pallida and the left pair normal 
female C. croceus. 
