Subgenus (Cochlodesma) J. P. Couthouy, 1839
(3-2-4-0-4-2-0-1-2-0-0-0-0) Syn. (Aperiploma) T. Habe, 1952 Ref. Abbott, 1974 p 561 leanum (T. A. Conrad, 1831) [T] (3-2-4-0-4-2-0-1-2-1-0-0-0) Lea's Spoon Clam Size 1"-1.5" long Ref. Abbott, 1974 p 561 bw
(3-2-4-0-4-2-0-1-2-0-0-0-0) Syn. (Aperiploma) T. Habe, 1952 Ref. Abbott, 1974 p 561
leanum (T. A. Conrad, 1831) [T] (3-2-4-0-4-2-0-1-2-1-0-0-0) Lea's Spoon Clam Size 1"-1.5" long Ref. Abbott, 1974 p 561 bw