82 



THE MONTHLY BULLETIN. 



on each side of the prothorax, the wing veins, the tibia? and feet are 

 dark — norie of these markings being pronounced in the young. 



Pig. 64. — The wild walnut louse (Moncllin calif ornica Essig). A, adult female; 

 B, nymph ; C, anal lobe or plate ; D, base of antenna, showing black ring around the 

 first segment ; E, head of nymph ; F, antenna of nymph ; G, antenna of adult ; H, 

 third antennal article of adult, showing sensorial I. style. (Essig, P. C. Jr. Ent.) 



Distribution. — Occurs in great numbers upon the wild walnut 

 throughout the southern part of the State. 



