Murray 1948 Petrognathus spinatus May 7 Bahía Concepción, sea level, 13 mi SE Mulegé, Baja Calif. were on the rocky flatter part which led up the hill previously trapped on. These cought nothing but about 9 out of 10 were sprung in one part of the line. May 8 Rancho Cadaje, SW end Bahía Concepción, Baja Calif. 50 live traps were set mostly among thick brushes called dulce mangroves which grew in a belt along the shore May 10 San José de Comondú, 700 ft., Baja Calif. Cought 1♂ in the 50 live traps on the slope SW of town. This was a surface of lava rock on which grew, pitahaya, pitahaya dulce, cardones, lumbos, ocotillo and other bushes moderately thick. The traps were low on the slope, just above a row of houses. May 13 4 mi N La Paz, S.L., Baja California Caught 1♂ in 50 live traps set on rocky hillside, where there were a number of boulders also. Several kinds of brush and cactus growing there. Yesterday caught 2 Peromyscus cremicus there (see journal) May 17 Trunfo, 1700 ft., Baja California This time had traps along a brush fence which enclosed a sandy corral 150 x 60 yds. This was surrounded by