Cynips Q. pomiformis, n. sp.

Globular, polythalamous galls, sessile on the twigs of Quercus Agrifolia, much resembling small round apples except that the apex is not depressed as is usuaily the case in this fruit. Size from one to two inches in diameter. Color various shades of brown, depending upon the degree of exposure to the sun. The smoothish surface sometimes with a few small, hard, scattered wart-like points.