Murray 1948 101 Journal June 6 Punta Gasparina, 23°16'N, 110°09'W, 10±ft., Baja Calif. We drove on to the above location, over a little used and much washed road. Many spots did not look as though they would last through another rain. Much of the trine passed up over small rolling mountains, and near the last were near the ocean. The vegetation was as usual, though parts were lower and scrubbier. Our camp is in a broad wash near the beach, at the edge where a low hill slope meets it. This has a short growth of lumboi, ocotillo, dulce mangrove, pitahaya, and some other shrubs. It is mostly soft sand. In the wash itself grows some dense thickets of romerillo, and another common wash plant, mostly concentrated along the edge. Set out 100 live traps, half around the edges of growth in the wash, and the other half on the slope in fairly thin vegetation and mostly soft sand. Saw only 1 small bat in the evening. June 7 Same location The traps in the wash caught 2 ♂ Perognathus arenarius, while those on the hill had 3 ♀ Perognathus arenarius and 4 ♀ Perognathus spinatus