RIBBLE, D.O. 1980 Journal 37. Hastings Reservation, Mendocino Co., CA Trap # No. July 4 (cont) XIII 4 0100 P. boylii RECAPTURE 4 0140 P. boylii RECAPTURE 3 B82 P. tuxei RECAP 3 0100 R. nigrolotis, o?, mature, scrotal testes. 2 0120 P. boylii, immature RECAP 2 0110 P. boylii, immature RECAP 1 B94 P. tuxei, o?, mature, testes swollen but not scrotal. XIII 1 B80 P. tuxei RECAPTURE X 1 B92 P. californicus, Q mature, vulva crusty, parous. Dark tail tip. Escaped towards stream. 2 0200 P. boylii, Q, mature, vulva closed, parous 3 2447 P. californicus, RECAP. Escaped towards stream 5# 2648 P. californicus RECAP? Both escaped towards stream. 5# 2649 P. californicus RECAP 6 0110 P. boylii RECAP 6 B35 P. californicus, still pregnant, RECAP. Escaped towards stream 17 0230 P. boylii, Q, mature, crusty vulva, parous 18 0130 P. maniculatus, Q, mature, pregnant (palpable). 19 0130 P. boylii RECAP 8 0240 P. boylii, o?, immature, nonbreeding. Tiny—size of my thumb. 9 0140 P. maniculatus, o?, mature, nonbreeding. 10 0200 P. maniculatus, o?, mature, testes swollen but not scrotal. 11 0120 P. maniculatus RECAP 11 0120 Perognathus californicus, o?, mature, nonbreeding. 12 2200 P. boylii Recapture. 13 0110 P. maniculatus Reap 13 0100 Mic. californicus, Q, sub (?), nonbreeding. 14 B46 P. californicus RECAPTURE 14 0140 P. boylii RECAPTURE X 15 0300 P. boylii, o?, mature, nonbreeding. I picked up all traps & headed back for Berkeley at 0940h. Successful week! Over 1800 trap nights total July 12 Russell Reservation, Contra Costa Co., CA. (Frank Dekerman is director) I was out today to set traps with Bill Lidicker for P. californicus. Bill has done alot of work w/ M. californicus here, so it was good to have him along to acquaint me with the Reservation. The reservation is surrounded on all sides by high ridges. Habitat includes grassland, oak woodlands, hard-dry chaparral on south facing slopes (Adenostma spp.); softer chaparral on north