32 THE GENERA AND SPECIES OF BRITISH BUTTERFLIES. 
and other markings of a somewhat darker tone of the same colour. This is a very elegant 
variety, and much sought by collectors. It is extremely rare. 
In the pearl-smarked species of the Fritillary Butterflies, the collector should always display 
some of his specimens with the under side uppermost, as being, in fact, more beautiful than the 
upper surface. If space, and the kind of cabinet permitted, it would be as well also to place at 
least one specimen sitting at rest, with the wings raised, in order to show one of the most usual 
natural positions of the insect. A careful drawing of the Caterpillar and Chrysalis might also 
accompany the specimens of the perfect insect, which would lend additional interest and com- 
pleteness to the collection. 
