Megayoldia属
Genus Megayoldia A. E. Verrill & K. J. Bush, 1897
Megayoldia属について
Species Megayoldia japonica (A. Adams & Reeve, 1850)／ベッコウキララガイ
Species Megayoldia lischkei (E. A. Smith, 1885)／オオベッコウキララガイ
Species Megayoldia martyria (Dall, 1897)
Species Megayoldia montereyensis (Dall, 1893)
Species Megayoldia thraciaeformis (Storer, 1838) ／フネソデガイ
