238, 239, 241, 285-291. 1952: 20, 21, 47, 50-52, 55, R. Zweifel June 1, 1957 Rana boylii River Creek, Mt. Diablo Road, 5.3 mi. E., 1 mi. S Walnut Creek, Contra Costa Co., Calif. 36. E. Karlestrom 14 tadpoles collected along with a couple of adults. !The tadpoles range in length from 38 to 56 mm, hind legs being about 8 mm long in the largest. Average length 45.3mm. The overall aspect of the ground color is Olive (Oligway). Diffuse melanic spotting is present on the tail for a musculature but is less evident on the body, due to darker ground color. Granistic spotting is also distributed over the body and tail. The ventral surface of the body is salmon and nearly opaque, so that the veins cannot be seen only faintly.