Murray 1948 Crotalus cerastes Apr 28 Punta San Felipe, 50' ft. Lower California. After spending several minutes setting a trap I heard a faint buzz from under the rocks beneath my feet. The snake had remained quiet until then but was pinched by the rocks. It buzzed almost constantly as I tried to uncover it but made little effort to strike, seeking instead to escape through the rocks. The location was a steep slope of talus, almost entirely rock, but within 25 yards of a flat and sandy area. Probably it chose the rocks to rest in during the day, the time being about 3:30 PM