262 LEPIDOPTERA. 



body, in the male, mixed yellow and black ; in the female 

 with a broad longitudinal deep black stripe ; legs black. 



Rather variable in the extent and connections of the pale 

 stripes of the fore wings, and in rare instances these are much 

 reduced, or, on the other hand, extended over the wing 

 surface. Mr. Sydney Webb has an extraordinary series of 

 varieties, some with the ground colour of both fore and hind 

 wings clear white ; one with the fore wings yellow and the hind 

 white ; another with the stripes of the fore wings absent from 

 one portion, confluent in another ; and one in which almost the 

 entire fore wings are creamy white without markings ; also 

 specimens in which almost the entire hind wings are black, or 

 the central portion devoid of markings, or with only marginal 

 spots. A specimen in Mr. S. Stevens's collection is entirely 

 black except some pale lines in the fore wings and a few 

 dots in the hind ; and a female has the fore wings orange, 

 and the hind lurid red ; while Mr. Capper has a specimen 

 of the same sex having fore and hind wings alike creamy 

 white, and Mr. J. Harrison several with a broad yellow stripe 

 along the costa from base to apex. Some specimens reared 

 by Mr. R. Adkin from Sussex larvse have the pale stripes of 

 the fore wings obscured with smoky black ; and a female, from 

 Marlborough, in Mr. A. Robinson's collection has the outer 

 half of the fore wings mainly occupied by a broad band 

 of cream colour, with the markings reduced to a few small 

 spots. There is moreover a permanently recurrent variety 

 known as var. liospita, in which the cream colour or yellow 

 in the males is completely replaced by whitish, the hind 

 wings especially being clear white. Several specimens of 

 this form are said to have been taken in the Church 

 Stretton district, Salop, but it is known as a permanent 

 form only on the higher portions of hills and mountains 

 in Scotland. The females found with it do not take by 

 any means the same direction of variation, but have the 

 black markings of the hind wings much extended and 

 intensified, and the orange portions often tinged with dull 



