RIBBLE, D.O. 1987 PEROMYSCUS CALIFORNICUS (m) Hastings Natural History Reservation, Monrovia Co., Calif. Nov. 14 (mt) and strength of the plastic we don't think the pups could have done it. Thus, it must have been her mate. In addition, we found an old carcass that only had leg bone-post-cranial material next to an ear tag #1042 (tagged 20 March). We released #1943 after dusting her and she escaped under a live oak just above the nest. Didn't catch #1941 or in any of the traps. Obviously, we need to develop a different collar to hold the radio on! Nov 16 1982 ♂ imm, TND. 28g. Ear-tagged. Trapped west of Grid DC-1. Blood, ear, saliva collected. Nov 18 1983 ♂ SAD, TND. 31g