ANDRICUS FIMBRIALIS, new species
Host. — Quercus dumosa, douglasii, lobata.
Gall (fig. 16). — Globular, green, 2 mm. in diameter, produced at side of midrib of young leaves in early spring, stunting the development of the leaf, whose blade is much reduced, its margin prominently fimbriate.
Habitat. — The type is selected from galls collected on Q. dumosa May 3, 1922, along Pierce Mill Road, near Palo Alto, Calif., the adults emerging: May 10. Flies were emerging at Lakeport May 27. Three paratypes are from galls on Q. douglasii: two from galls collected at Paraiso Springs May 9, 1918, date of emergence not recorded, and one from Paso Robles, the fly emerging May 23, 191S. One paratype is from a gall on Q. lobata collected on May 20, 1922, the fly out and dead before May 27. The galls were seen on Q. durata also. In addition to the localities given above, the galls were also seen at Boulevard, in Santa Ana Mountains, on Santa Catalina Island, Camp Baldy, Bagby, Newhall, Santa Margarita, Jolon, Los Gatos. St. Helena, Calistoga, Ukiah. Bartlett Springs, Oroville, Red Bluff. Shasta, and Baird, Calif.