PLATE XXI. 



Fig. l.—Pulvinaria innumerabilis Rathv. Leg and antenna of female. 

 Greatly enlarged. 



Fig. 2.—Pulvinaria innumerahilis Rathv. Adult female on twig, the cot- 

 tony covering of the egg mass frayed by the weather. Enlarged. 



Fig. 3.—PuIvinaria pruni, n. sp. Sketch of nymph, its antenna, and leg, 

 at time of location upon the plum leaf. Enlarged. 



