No. 2368. AMERICAN SUBTERRANEAN GALLS ON OAK— WELD. 243 



40. WELD 708. 



Host. — A deciduous oak. 



Gall— On under side of main root in clump of small bushes, single.. 

 or if clustered only one well developed, 5 mm. in diameter, surface 

 brown, hairy, wall thin and cavity large. 



Habitat— Collected at Las Vegas, New Mexico, April 4, 1918. 



41. WELD 1501. 



Plate 37, fig. 33. 



Host.— Quercus agrifolia Nee, Quercus wislizeni A. de Candolle 

 Quercus californica Cooper. 



Gall — Abrupt oblong swellings at base of sprouts which are only a 

 few millimeters in diameter. The gall may measure 25-35 mm. in 

 diameter by 35-75 mm. long. It is hard and woody when dry, cov- 

 ered with normal brown bark which is not much thickened. Cells 

 radially arranged in pockets in the wood. Exit holes with a charac- 

 teristic smooth ring. 



Habitat. — The writer has collected old galls on Quercus wislizenii 

 on Mount Tamalpais, in San Gabriel and San Antonio River canyons 

 in San Gabriel Mountains, in Ojai Valley, and at Santa Margarita, 

 California; on Quercus agrifolia at Newhall, near Carpinteria, at 

 Santa Margarita, Paso Robles, Paraiso Springs, Monterey, and Los 

 Gatos; on Quercus calif qmica at Dunsmuir and in Sequoia National 

 Park. Fresh galls nearly full grown but too immature for rearing 

 were seen only once at Monterey, on May 11, 1918. 



42. WELD 407. 



Plate 37, fig. 36. 



Host. — Quercus laceyi Small. 



Gall. — Dried-up galls, 5 mm. in diameter, were found at base of 

 stump in the late fall. They were globular, with a slight pedicel, 

 produced in a cluster. Probably a fleshy spring gall of the Trigonaspis 

 type. 



Habitat. — Boerne, Texas. 



43. WELD 408. 



Plate 37, fig. 34. 



Host. — Quercus laceyi Small and Quercus virginiana Miller. 



Gall. — Confluent, globular, dried-up galls, 4 mm. in diameter, in a 

 small cluster, pubescent on surface. Found in fall on young shoots 

 of live oak buried under thick bed of dead leaves and on laceyi attached 

 to a large root. 



HaMtat. — Boerne and Cuero, Texas. 



