San Felipe, S.L., Lower Calif., Mexico. April 3, 1926. which is found in good numbers around here, seems to be a quite massuming rattlesnake. Have have been killed to date & but one rattled at any distance (10 ft. according to Mr. Huey). The others lay quietly until a close approach of a few inches or quick movement toward them arouses them. Two of the five were lying coiled in a round heap with most of the bodies in the sand or dirt and the whole body invariably in the shade. I cannot believe that they are were asleep although one allowed itself to be discovered (by Huey) near camp, stayed in the same position even when he had returned with a stand camera allowed photography at a few feet & considerable walking around and finally showed life by a flicker of its black tongue when a string was dragged over its head. Another allowed me to step within six or eight inches of it, head before it betrayed its position in the middle