Murray 1945 Peromyscus crinitus Apr 7 E side Cocopah Mts, 21 mi SSE Mexicali, Baja, Calif. Took 3 in 50 live traps. These were set 25 ft. apart across a broad sandy and quite rocky wash. There was considerable cresote, some ironwood and other bushes. On three sides were rocky hills. Apr 9 Punta San Felipe, 50 ft., Baja, California 50 live traps were set in rocky talus covered hills, mostly up high. These were located near the shore and were sparsely vegetated, some areas having nothing but an expanse of shale. The traps caught 3♂, 2♀. Apr 10 Same location Had out 10 Schuyler traps, in the same area but spotted in front of wood rat nests. Caught 1♂, 1♀. The 56 live traps, again in similar terrain but with somewhat volcanic rock and down lower, passing partially through a deep draw. There was perhaps a little more vegetation. These had 2♂ Apr 18 Cerro Prieto, 20 mi SSE Mexicali, Baja Calif. 50 live traps and 15 museum specials were set among the lava rock slopes of the crater, NE end. There was a little cresote and other bushes (see journal). The live traps had 1♂, 1♀ and one immature which was released.