R. Zweifel April 23, 1951 285 Rana boylii mucrosa Injares Camp Ground, Little Rock Creek, San Gabriel Mtns, Los Angeles Co., Calif 1444, R. Zweifel Frog in leaf pile The ground color is light greenish-grey. There are irregular dark markings dorsally and laterally. These markings as amorphid spots ranging in diameter from two to four millimeters. There are about 16 of the spots on the back between the dorsolateral lines. The dorsolateral lines are marked off by an accumulation of gold-brown pigment which is not conspicuous elsewhere on the body. Dark markings on the back of the head between the eyes give the impression of a light line across the front half of the eyelid and intervening head area, but this "light line" is the same color as the rest of the ground color, not lighter as in R. b. boylii. The hind legs (femur, tibia and foot) are barred. The tips of the digits are black, especially the hind two. Indic grumosis is well developed: [illegible] Black The abdomen is pale yellow, shading into white on the throat, which is without spotting