Roford, R. 1974 Journal 13 Dec. 5 mi. W, 1/4 mi. S San Telmo de Abojo, Baja Calif. del Norte, Mexico We checked the traps in the flat area 2 miles west of Maneadero before breakfast. I caught nothing in the 21 traps I set in two old pepper fields, but 4 Peromyscus maniculatus, 3 Mus musculus, and a Mustela frenata. The latter may be a range extension and was caught by Bill Glantz. The people trapping 7.5 miles west of Maneadero cached Neotoma lepida and N. fuscipes, Perognathus fallax, several Dipodomys agilis. We put up skins and processed material until after noon, then went south on Hwy 1 to a shallow arroyo several miles south of Colonet. We drove west down a road which paralleled the arroyo to within about a mile of the ocean, camping by some bushes (Rus farina). The habitat was very dry, with many agaves, several species of spiny cactus, and low shrubs. We set traps in various places - some on a small hill, some in a narrow arroyo with Rus, which the hills didn't have, some in the flat sandy area, some on flat hardpan above the sand. The elevation was probably less than 50 ft. There was some cloud cover, up to about 50%, in the early afternoon, but the sky was again clear by nightfall. It seemed quite humid in the evening, with dew beginning to form. We checked our traps around 2300, after putting up more skins and processing more blood and tissues. I caught one Neotoma lepida. The wind was light mostly, gusting to about 30 in the late afternoon. Temp ~ 40-60°F.