Genus NOTIOXENUS Wollaston, 1861

This genus has a discontinuous, predominantly tropicopolitan distribution. Only one species, the southeastern Polynesian Notioxenus cylindricus Jordan (1933), is known from the entire Pacific region east of Guam. Two species have been described from Japan, and it is probable that many undescribed species are to be found in the regions to the south and west of Guam.