236 LEPIDOPTERA. 



black dots decreasing in size from the front ; on the rest of 

 the back a dark green dorsal stripe, which is attenuated a little 

 towards each end, is relieved on either side by a broad stripe 

 of opaque pearly greyish-white, followed by a broader semi- 

 transparent green stripe, distinct without hardness, margined 

 below by a threadlike opaque whitish line, which thickens 

 as it approaches each segmental division : spiracles round, 

 black ; the undersurface and all the legs have a pale watery 

 greenish tint ; the raised dots have each a fine silky hair ; 

 the whole skin is tense, shining, and more or less trans- 

 lucent. 



When it is full fed and about to spin up it becomes of a 

 beautiful opaque rose-colour on the back, destitute of any line 

 or stripe, the head alone remaining unaltei-ed in colour or 

 markings. In a triangular web of whitish silk enclosing a 

 space of one inch iu length within which is a hammock-like 

 cocoon of finer silk ; iu some corner. In this the larva 

 remains quiescent and unchanged through the winter, and 

 till the end of April. (W. Buckler, condensed.) 



August and the beginning of September, on Uiqxttorium 

 cannabinum. Hof mann adds Scnecio ')iemorcnsis. Feeding on 

 the leaves, living in a chamber formed by folding down the 

 top or side of a leaf. Very active when young. 



Pupa three-eighths of an inch long, moderately slender ; 

 wing and antenna-cases long ; cremaster furnished with four 

 or five minute bristles converging at their extremities; 

 shining pale brown. In a cocoon as above described. (W. 

 Buckler.) 



This species is local, inhabiting wet woods and marshy 

 ground where the hemp-agrimony is plentiful, and even lanes 

 in such districts. It hides usually in the thick masses of 

 this plant, on which it has fed, and is easily disturbed in the 

 daytime ; but flies slowly and soon hides itself again, some- 

 times among tall grass and other herbage. At one time it 

 could be obtained close to the outskirts of London, but that 



