Iomys sipora Chasen and Kloss, 1928 . Proc. Zool. Soc. Lond., 1927(4):819 [1928].

TYPE LOCALITY: " Sipora Island, West Sumatra ." [Indonesia].

DISTRIBUTION: Mentawi Isis [Indonesia].

COMMENTS: Part of the rodent fauna endemic to the Mentawi Archipelago (see comments under Leopoldamys siporanus).