Subgenus (Neotrapezium) T. Habe, 1951

(3-4-4-0-1-13-0-22-2-0-0-0-0)
Ref. Abbott, 1974 p 518
Vaught, 1989 p 134
[ see also as Genus]

liratum (L. A. Reeve, 1843)
(3-4-4-0-1-13-0-22-2-1-0-0-0)
Lirate Trapezium
Syn. Trapezium (Trapezium) delicatum H. A. Pilsbry, 1905;
Trapezium (Trapezium) japonicum H. A. Pilsbry, 1905
Ref. Abbott, 1974 p 518

sublaevigatum J. B. P. A. de Lamarck, 1819 [T]
(3-4-4-0-1-13-0-22-2-2-0-0-0)
Ref. Abbott, 1974 p 518