222 POPULAR, ENTOMOLOGY. 



checks and counter-checks to remedy the fruitfubess of the 

 insect world ; first the Wasp, a great destroyer of Elies and 

 other insects, is prevented from becoming too numerous by 

 the Wasp-Beetle; then, lest it should reduce their numbers 

 so as to interfere with their usefulness, this last is kept in 

 check by the Ammalon, which in its turn, that it may obey 

 the law, 'thus far shalt thou come and no further,' becomes 

 the prey of another devourer." The Mordellida are all of 

 small size, and occasionally variegated in colour. 



Lepidopteka. Nymphalid^. 

 YANESSA. 



Generic Distinctions.— See page 139. 



Yanessa Antiopa. Camherwell Beauty. This species 

 sometimes measures three inches ; the upper side of both 

 wings is a deep purplish-brown, having the appearance of 

 velvet, bounded externally by a broad band of velvet black, 

 in which is a series of large violet-blue spots ; beyond this 

 there is a cream-coloured border, slightly waved on the 

 inner side, and sprinkled with minute black spots ; the an- 

 terior border has two cream-coloured spots, and is mottled 



