I04 ^^^^ ECONOMIC ENTOMOLOGY. 



Fig. 74. 



Hog-louse, Hcsniatopinus iiriiis : the scansorial claw at c. 



Fig. 75. 



Ox-louse, Na-matopinus eitrysternus : b, mouth opening ; (-, </, anal details ; e, egg, 

 attached to a hair. 



