FAMILY JASSIDJi 



111 



Family Jassidae. — The family JassidcB, including the forms 

 which ha\e the ocelli located in the margin of the head be- 

 tween the vertex and front, is very largely represented in 

 temperate regions and many of the species affect important 

 cultivated crops. 



Fig. 67.— The inimical leaf hopper (Deltocephalus inimicus): a, adult; 

 6, face; c, vertex and pronotum; d, female genitalia; e, male genitalia; 

 /, elytra; g, nymph. All enlarged. (After Osborn and Ball.) 



Shovel-nosed Leaf hopper { Dori/cephaln.'^ plaiyrhynchus). — 

 The sho\el-nosed leafhoi)per is a rather large species with 

 an enormous prolonged head and is found upon the wild 

 oat, Elymus canadensis. The eggs are laid beneath leaf 

 sheaths, a considerable number in a compact row and the 



