INSECTS INFESTING THE SWEET POTATO. 



315 



b}^ covering the heap with old sacks, etc., and placing on the 

 top a light covering of earth. In all cases the storing place 

 should be as far as possible from localities already infested. 

 Sprinkling slacked lime on the heaps will prevent the moths 

 from depositing their eggs on the part covered by the lime. 



INSECTS INFESTING THE SWEET POTATO. 



CHAP. 



Tortoise Beetles 215 



The Goklen Tortoise Beetle {Cnmda mi- 



richalcca ) 21.5 



The Mottled Tortoise Beetle (Cansida gut- 

 tata) 215 



OQAF. 



The Two-striped Tortoise Beetle (Casfida 

 bivittata) 215 



The Black-legfjed Tortoise Beetle (Casnida 

 nifjripea) 215 



CHAPTER CCXV. 



Tortoise Beetles. 



Order, CoLEorTERA ; Family, Chrysomelid.e. 



[Feeding upon the leaves of the sweet potato ; a flattened 



larva, having a row of spines along each side of the body ; 



finally transforming into flattened tortoise-shaped beetles.] 



Fig. 313. 

 Fig. 312. 



Fig. 812. — Two-striped Tortoise Beetle, larva and pupa ; ^, 

 the larva, enlarged — color, dirty white ; 3, the pupa, enlarged 

 — color, brownish ; ^, the beetle, enlarged — colors, yellow and 

 black. 



