Herbivision 1950 Phrynosoma coronatum Sept. 3 Black Rock Spring, 4500 ft., San Bernardino Co. Calif. '½"+ rain the night before; morning mostly overcast. In main canyon at point above camp where it widens out into a fairly broad trough, I collected 4 individuals. The soil here is the type of sterile - appearing small-gravel (eroded granite) common in the area. In the bottoms of minor washes it assumes more of an alluvial character. The vegetation is pinon-juniper, rather thinly distributed, with burro brush and some manzanita. All four individuals were on bare gravel, and ran under plant cover when approached. The one large animal was in a manzanita patch; the other three in burro brush. First one found accidentally during litch-collecting; other three were result of concentrated two hour search. One upon having formalin injected into it under some pressure, disgorged a large quantity of dark brown winged insects which I believe were alate termites. Many termites were in flight at the time.