Subgenus (Zemysia) Finlay, 1926

(3-4-4-0-20-7-0-15-2-0-0-0-0)
Ref. Bernard, 1983 p 30
Keen. 1971 p 128
Lindner, 1977 p 107
Vaught, 1989 p 125
[see also as Genus]

calculus (L. A. Reeve, 1850)
(3-4-4-0-20-7-0-15-2-1-0-0-0)
Syn. ? Diplodonta (Diplodonta) obliqua R. A. Philippi, 1846
Ref. Keen, 1971 p 128 bw

inconspicua (R. A. Philippi, 1845)
(3-4-4-0-20-7-0-15-2-2-0-0-0)
Syn. Amphidesma punctata authors [not T. Say, 1822];
Diplodonta (Diplodonta) inconspicua R. A. Philippi, 1845;
Diplodonta (Diplodonta) philippii L. H. Hupe in Gay, 1845
Ref. Bernard, 1983 p 30

obliqua (R. A. Philippi, 1846)
(3-4-4-0-20-7-0-15-2-3-0-0-0)
Syn. Diplodonta (Diplodonta) obliqua R. A. Philippi, 1846;
Lucina calculus L. A. Reeve, 1850
Ref. Bernard, 1983 p 30

parilis (T. A. Conrad, 1848)
(3-4-4-0-20-7-0-15-2-4-0-0-0)
Equal Diplodon
Ref. Amer. Fish. Soc., 1988 p 36
Syn. Diplodonta (Felaniella) artemidis W. H. Dall, 1909;
Loripes parilis T. A. Conrad, 1848;
Lucina cornea L. A. Reeve, 1850;
Lucina nitens L. A. Reeve, 1850;
Lucina sericata L. A. Reeve, 1850;
Lucina tellinoides L. A. Reeve, 1850
Ref. Bernard, 1983 p 30

sericata (L. A. Reeve, 1850)
(3-4-4-0-20-7-0-15-2-5-0-0-0)
Syn. Diplodonta (Diplodonta) artemidis W. H. Dall, 1909;
Diplodonta (Diplodonta) serricata authors;
Lucina cornea L. A. Reeve, 1850;
Lucina nitens L. A. Reeve, 1850;
Lucina tellinoides L. A. Reeve, 1850
Ref. Keen, 1971 p 128 bw

zelandica (J. E. Gray, 1835)
(3-4-4-0-20-7-0-15-2-6-0-0-0)
Zelandic Diplodon
Ref. Abbott & Dance, 1982 p 323 c