198 SILVER-STRIPE BUTTERFLY. 
the latter cireumstance that the early English col- 
lectors termed this the S¢lver-ecashed Fritillary. 
The caterpillar of this butterfly is solitary, and is 
found on the grass in May. It feeds on the dog’s 
violet, raspberry, and nettle. It is of a plain yel- 
lowish brown, with several longitudinal stripes of 
dark brown ; it is also thickly beset with barbed 
spines, a quarter of an inch in length; and has, in 
particular, two of a remarkable form on the first 
annulation next the head. The chrysalis is grayish, 
with yellow points, and it remains in this condition 
twenty or twenty-one days, and appears in the 
winged state early in June. It is rather an un- 
common butterfly; and chiefly inhabits Suffolk, 
Essex, Kent, Devon, Berks, and Penge Common. 
