Berkeley and Los Angeles: University of California Press, 1956. p. 255-348, wraps edge worn, 9.5x 2.5 inches, corners bumped, illus with drawing and also includes 4 plates at rear, inscribed by Camp to Henry R. Wagner. On a genus of herbivors found in St. Johns, AZ. Memoirs of the University of California, vol. 13, no. 4.