Order Cephalaspidea 204 多様性に富むグループ。貝殻は外在性、内在性、無殻とさまざま。 頭部に頭楯を形成する。触角はない。砂に潜る種や、側足を使って泳ぐ種もいる。 ヒラムシ類、多毛(ゴカイ)類、藻類など食性は多岐にわたる。 Color: Sort by Category Bulloidea spp. Bulla ampulla Linnaeus, 1758 Bulla orientalis Habe, 1950 Bulla sp. 1 (Audouin, 1826) Bulla vernicosa Gould, 1859 Hamineobulla kawamurai Habe, 1950 Retusa concentrica (A.Adams, 1850) Retusa phiala (A. Adams, 1862) Retusa spp. Retusa succincta (A.Adams, 1862) Acteocina decorata (Pilsbry, 1904) Acteocina exilis (Dunker, 1860) Acteocina fusiformis A. Adams, 1850 Acteocina gordonis (Yokoyama, 1927) Acteocina sp. Acteocina sp. 2 Haminoeid sp. 3 Haminoeid sp. 4 Haminoeid sp. 6 Haminoeid sp. 7 Haminoeid sp. 8 Haminoeid sp. 9 Haminoeid sp.11 Haminoeid sp.12 Haminoeid sp. 2 Haminoeid sp. 5 Haminoeid sp.10 Haminoeid sp.13 Aliculastrum cylindricum (Helbling, 1779) Aliculastrum debile (Pease, 1860) 1 2 3 4 > See all posts ->