The Miocene formation developed along the west border of Hukusima basin has been stratigraphically studied by S., IZIRI in 1941-2., Some fossils from the formation were collected by him., The present writer has examined and described them in this paper, three of which are new to science, i., e., Nucula izirii, Pandora hukusimana, and Volsella izirii., The results of detailed stratigraphic study by IZIRI will be published in the Bull.,