抄録
A new genus, with a new species, of the talpine mole is described from the island of Uotsuri-jima in the Senkaku Islands, the Ryukyu Islands, under the name of Nesoscaptor uchidai. This species retains the dental formula of I3/2 + C1/1 + Pm3/3 + M3/3=38, which consists of one fewer pair of teeth in the lower incisors than in Scaptochirus with 40 teeth. The skull has very short and broad rostrum, broad maxillary portion, and very large molars all of which are also characteristic to Scaptochirus. Except for the dental and skull characters probably induced by the reduction of teeth, the other characters such as the feature of tympanic bulla, the ear bones consisting of malleus with a broad and long triangular cavum lamina and of short incus, and the pelvic girdle with two pairs of dorsal foramina are principally common to those of Euroscaptor and Mogera. Thus the new species is a composite of some other talpine moles. Retaining two cusps on the last lower premolar is a remarkable character which has never been found in any of the other talpine genera.
