Erichson 1934 New River 23. leriticaudis; none found. Moved to a camp 30 mi. north of Phoenix on east side of New River Valley. Camp on flat of valley floor near hill and a little north of Mt. Ochoa. Ground hard packed coarse gravel in fine soil, becoming more rocky and soil coarser as hill reached; hill granite much weathered. Vegetation predominately creosote and palo verde; some giant cactus, Opuntia leptocaulis, and a deer horn cholla. A bush in blossom found along draws near hill, specimen saved. Let 6.7 north and east side medium sized traps half on mesa and half on, small rocky hill N. of Mt. Ochoa. Line covered half a mile. Feb. 11. From 34 traps on mesa took 15 Dipodomys merriami and 1 Perognathus baileyi. Most of Dipodomys near a sandy wash, Perognathus on small rocky swell. From 33 traps on hill took two Perognathus intermedius 3 Peromyscus, and 1 Neotoma lepida; 3 traps missing: 1 Perognathus and 1 Dipodomys eaten, not saved; skulls only saved of 6 ste. Dipodomys. Heard Robins late in afternoon. Let 12 medium traps and 1 rat trap on mesa, 22 medium and 3 rat traps on east and south east side of same hill as previous night. Feb. 12. Took 4 Dipodomys merriami, 2 Perognathus baileyi and 1 Perognathus intermedius from traps on mesa; from hill took 3 Perognathus intermedius one Peromyscus. Desert Tortoise found in small cave under large