R. Zweifel Nov. 6, 1951 290 Rana boylii sierrae Sage Hen Creek, 3 mi. NW Hobart Mills, Nevada Co., Calif. 1641 R. Zweifel (coll. O. Pearson) Nov. 3 Dr. Pearson states that although the days were warm, night time temperatures were down in the low 20's F. About three weeks ago there was an 8" snowfall which was only partially melted at this time. Of two frogs captured, one froze to death at night & the other was returned to Berkeley alive. Both were found in small pools The dorsal pattern consists of numerous 1.5-2.5mm dark spots on an olive-brown background. The hind legs are spotted, not barred. Dorsolateral folds moderately well developed. When viewed from directly above, the margin of the eye projects past the edge of its jaw, in contrast to the conditions 1691 seen in 3 specimens from DH Lyell