2004 Volume 62 Issue 3-4 Pages 97-110
Two new species of Bathymodiolus, B. hirtus n. sp. and B. securiformis n. sp., are described. They inhabit bathyal chemosynthetic environments around methane seeps on the Kuroshima Knoll, off the Yaeyama Islands, southwestern Japan. B. hirtus n. sp. is characterized by having anteriorly situated umbones and a distinctly hirsute shell surface. B. securiformis n. sp. has an elongate shell with a short and low anterior part, a high and expanded posterior part, and a deep ventral concavity. Some anatomical characters also separate these new species from hitherto known species.