R.D. Kirkpatrick 1964 Mus musculus Sand Island, Johnston Atoll, Pacific Nov 9 A.M. A total of 57 Mus (including 30 5 unmarked ones) were in the grid traps. #396 had eaten the skin and flesh from the head and shoulders of # 393 which was caught in the door of trap #33. This is my first evidence of carnivorous behavior in these Mus. 10 P.M. The grid traps were set. Dec. 8 A.M. A total of 56 Mus (including 1 2 unmarked ones) were in the grid traps. 10:30 P.M. The grid traps were set. Dec. 8 A.M. A total of 58 Mus (including 2 7 unmarked ones) were in the 72 grid traps. 10:30 P.M. The grid traps were set. Dec. 8 A.M. A total of 56 Mus (including 3 4 unmarked ones) were caught on the grid. 10 P.M. The grid traps were set. Dec. 8:30 A.M. A total of 63 Mus (including 4 5 unmarked ones) were caught on the grid. 10:30 P.M. The grid traps were set.