Subgenus (Ctena) O. A. L. Morch, 1860

(3-4-4-0-20-4-2-13-2-0-0-0-0)
Ref. Abbott, 1974 p 460
[see also as Genus]

mexicana W. H. Dall, 1901 [T]
(3-4-4-0-20-4-2-13-2-1-0-0-0)
Ref. Abbott, 1974 p 460

orbiculata (G. Montagu, 1808)
(3-4-4-0-20-4-2-13-2-2-0-0-0)
Dwarf American Lucina, Dwarf Tiger Lucina, Dwarf Tiger Lucine
Ref. Abbott & Dance, 1982 p 321 c
Amer. Fish. Soc., 1988 p 34
Syn. Codakia (Codakia) recurvata W. H. Dall, 1901
Ref. Abbott, 1974 p 460 bw

Form filiata W. H. Dall, 1901
(3-4-4-0-20-4-2-13-2-2-0-1-0)
Ref. Abbott, 1974 p 460