Fig. 1. — Aspidiotiin piruirhtsnti (The ^^au Jose or Pernicious Scale), on pear fruit aud 

 twig, with enlarged male and female scales. {From U.S. Be/it. Agric.) 



YiG. 2. — Jfytiluspis pomortim (Tlie Oyster-shell Barls LouseJ : a, female scale from 

 below, showing eggs; 6, same from above — greatly enlarged; c, female scales. {From U.S. 

 Dept. Agric.) 



