Bui. 1 13, Bureau of Entomology, U. S. Dept. of Agriculture. 



Plate VII. 



Studies of Cactus Insects. 



Fig. 1.— Eggs of Melitara mnctolineella on spines of Opuntia. Fig. 2.— Eggs of Chelinidea vittigera 

 onspine ot Opuntia. Fig. ;;.— Eggs of Copestylum marginatum on Opuntia spines. Fig. ■!.— 

 Narma pallidicornis. (Original.) 



