R. Boyle May 12, 1951 274 Ronan Boyle 86 Wm. D. Clarke (April 15, 1951) Twinlock Creek, Tuolumne Co., Calif. SV 96 mm.— The light forehead band is well indicated. The dorsal color is dark granch-brown with a definite reddish brown overcast; the latter particularly evident on the subia and dorsal dorsolateral folds. There are moderate sized (4 mm) spots of darker color on the back, but they are not very distinct. The two tojos are brown, not sharply defined black as in R. b. concolora. The hind legs are barred. Throat markings tend toward the sermform type. On March 17-18, Bill Clarke visited the same general area where this specimen was collected and found Crotalus and Hyla but no R. Boyle.