FIG. 93. San Jos6 scale. 1, female scales, nipples lateral; 2 and 4, adult females with 

 young; 3, male scale; all much enlarged. 5, adult female scale, natural size on apple; 6, dis- 

 coloration of fruit by growing scales. (After Hall, Lowe and Parrott, N. Y. (Geneva) 

 Bull. 193 and 194.) 



