Lee Arnold 1937 Peromyscus crinitus 2 mi. W Smith Creek Cave, 6,300 ft. Mt. Moriah, White Pine Co., Nevada.. Junell, for the mice to run on; scattered juniper, sege, rose, etc.; many woodrat droppings. It was interesting that Fitch and Johnson cought no Peromyscus crinitus on the south side of the canyon although they both had long traplines set out Junel2, In the same trapline I caught four. This time they were all Immatures- 2 & and 2♀. Two of these were caught in the same net trap. Could it be that the adults being killed off the immatures now have to hunt for themselves or is it that it was just chance that I should catch only adults the first night and only young the next. Junel3, Four caught in same trapline. June 14, Two caught in same trapline—1 Fd.♀ and 1 Imm.♂. June 16, Out of seven rat traps set ½ mi. W Smith Creek Cave I had 3; one adult and two immatures. Habitat: large boulders, south side of canyon, Pinos, Junipers, course soil. June 17, Out of 33 mouse traps set NE of camp on the steep North side of the canyon I had two. 1 adult♀, 1adult ♂.