Monday 1948 Sorex ornatus lagunae June 11 La Laguna, 6,200 ft., Sierra de la Laguna, Baja Calif. Had set out 42 Museum Special mouse traps, baited with walnut along the stream by our camp on the southwest side of the valley. My traps were along one side and Dr. Benson's on the other, all set to catch a shrew if possible, and at the edge of the water. There were a number of oaks and other trees along the banks offering considerable shade. Several kinds of bushes, particularly a sort of currant, were close to the waters edge, and there were many granite rocks in and along the water. Caught 1♂ in a part which was very densely wooded and had many leaves on the ground. The trap was under a small ledge next to water where it had washed out a little space. The trap and most of the shrew were wet when I found it. All were set very close together, often no more than a foot or two apart.