We have made collections of murine mammals in Kyushu by snap traps from Feb. 1953 to Jun. 1956. These results are as follows, though the surveys in southern Kyushu are yet incomplete. In Kyushu, the five species, namely microtus montebelli and Anteliosnys smithii of Microtinae and Apodemus speciosus, A. geisha and Micromys japonicus of Muridae, are found as murine mammals dwelliing in the field. Out of these, A. speciosus is most dominant and distributes from low to high lands in Kyushu, but the population gradually decreases as altitude becomes higher. A. geisha, though the habitat is restricted in the forest, is popular next to A. speciosus and especially abundant in the high land. The majority of murine mammals is said to be occupied by these two species in Kyushu. Anteliomys synithii is popular next to A. geisha and trapped upwards from the level of about 600 M. Generally its population increases with the increase of the height. Microtus montebelli was trapped at the cultivated land in Fukuoka and Tosu about 10 M. Up to the present, it has been thought that this species is few in number in Kyushu, but judging from our results, it was known that this species inhabits fairly numerously in some restricted places. Micromys japonicus distributes from low lands to the height of 1000 M. But its habitat is limited in the plain or the cultivated land, the numbers of individuals being pretty few.
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