V. Memmler 1943 Peroqnathus californicus June 5, Santiago Springs, 2700 ft., 8 mi. E + 1/2 mi. S (Memmler), Slab, Caly. every two hours on warm kliv. They seem to be very easily chilled. I kept them with me during the night to keep them warm. In 48 live traps set along the banks of the creek going south from Santiago Springs I cought 18 Peroqnathus californicus (8 imm. m's, 5 imm. f's, 4 adult m's + 1 adult f.) I also caught 2 Peroqnathus moratus. No other genera were caught at all. The banks of the stream are quite steep in some places. They are full of holes of various sizes and there are frequently runways at the bottom of the cliff. The creek is dry for most of the way, but just below the spring there is some water (more or less stagnant) in the bed. The miniature f's caught weighed: 15.6, 16.9, 16.9, 17.5 and 19.0. The last had 6 very small embryos. She had a total length of 182 and a tail of 102. June 6, In 47 live traps set in the same region as last night caught 4 m miniature P.c., 2 miniature f P.c. and 1 adult m P.c.