La Arnold Peroqathus parvus 1937 Warm Springs, Lassen Co., Calif. May 25 Three of these caught 4 1/2 HW of here in same habitat e's Dipodomys merriami. Three characterized by abundant salt bush and hard baked soil. May 27 One caught 1/4 mile east of Warm Spring in baked soil with scattered saltbush. May 29 Horse Canyon, 5,800 ft., Tshrum Pk., Washoe Co., Nevada A single & was caught beneath a low bush up one of the side canyons of Horse Canyon. It was in the bottom of the canyon next to a small stream. The walls of the canyon went up steeply on both sides at about a 50 degree angle.