Erichson 1934 Harquahala Mts. 3000ft, Yuma Co., Ariz. 25 wash. Entire length of range as viewed from highway north of it, seemed to be similar in nature and not favorable for gophers. Set 80 medium sized traps on hill southeast of old well in wash, done extending from base to and in horizontal band of rock outcrop about 400 ft., above level of base. Feb. 15, 1937. From trap line took 10 Peromyscus eremicus and one Dipodomys merriami; 4 of Peromyscus not saved. Last part of afternoon hunted birds; collected 1 Desert Sparrow, failed to locate any of Canyon Towhees or Thrashers. Feb. 16. For an hour early in morning hunted Thrashers and Canyon Towhee; failed to get shot at either. Moved to Salome, Yuma Co., Ariz., stopping at an auto camp. Afternoon spent at Harrisburg, 1765 ft., Yuma Co., Ariz., which is 4 miles south east of Salome and is the Nord Ranch. Ranch is on the south side of the Harquahala Mts., on the Centinel Wash. Consists of 25 acres in fields of alfalfa and gardens; a small pond, 60x30ft makes a continuous supply of water available for stock and native animals. Birds numerous around ranch; collected 5 Horned Larks, and 1 each of Say Thrush, Shrike, Sipping Sparrow and Pipits; other birds seen, on list for region. Feb. 17. Hunted at Nord Ranch last half of morning and two hours last part of afternoon; took 2 Horned Larks. Ranch is only cultivated area in many miles, is surrounded by mesquite thicket and creosote mesa