PEARSON 1955 skinning until 3 p.m., then drove until 5, but 1/2 hour stuck in mud. Stopped at 8500 ft, probably approaching El Cumbre and Rio San Juan (again). Set 2 logs of traps along stone walls and rocky slopes. SUN Oct.9 This locality 20 mi. SSE Camotogini, 8500 ft; Tarifa. Semi-arid paja here, and goats in traps were Graomys and Phyllotis. One or two good Graomy's, a few sticky ones (Ph. graomoida?), and a lot of cerunni? but longer-tailed than yesterday's. Total 20 mice, nothing else of genus Phyllotis + Graomy's), nothing else. Such may have put me down in a place where Ph. graomoida cultriformis is an intergrade or hybrid. In any event, I am in a place where I can't tell what I'm catching, so am going to stay another night to compound the confusion. 46 mice in 2 nights, 35 of them saved. Even under the mattress they begin to scurry about 3 p.m. While running my traps in a.m., a truck broke two teeth out of its differential 100 yards from camp, so I had company all day who drank up all my water. Skinned until 3 p.m., then towed the truck a mile down the road to a couple of huts under dog molly trees. My locality is about 2 miles south of the bridge over the San Juan River, maybe 3 miles S of a Pueblo, San Carreras. Vegetation see moravia. Put out (1/2 logs of traps in about same locations as yesterday. Oct.10 This is good country also. Fine red sand in the rocky stony hillsides practically no grass, no bunch grass. Scattered shrubs including small thorn trees up to 10 ft, a creosote bush up to 5 ft, a small "fig" similar to that at Chocon, assorted other bushes, mostly thorny, low growers, but no saguaro or fuzzy cactus. A clematis vine rather somewhat larger + more scruffy than the one