Abstract / Introduction / Summary:
The bats distributed on Koshikijima Islands were investigated using mist nets and bat detectors. Inhabi- tation of Rhinolophus ferrumequinum, Miniopterus fu- liginosus, Pipistrellus abramus and Vespertilio sinensis was confirmed for the first time. The former two were widely distributed on the islands. Pipistrellus abramus seems to be distributed in the villages. Roosting sites of Vespertilio sinensis may be limited to cliff crevices, and the mumber of the bats is thought to be small.