Subgenus (Machaerodonax) E. Romer, 1870

(3-4-4-0-24-2-0-18-11-0-0-0-0)
Ref. Bernard, 1983 p 48
Keen, 1971 p 239
Lindner, 1977 p 112
Syn. (Platydonax) W. H. Dall, 1900 ?
Ref. Vaught, 1989 p 131
[see also as Genus]

carinatus [carinata] S. C. T. Hanley, 1843
(3-4-4-0-24-2-0-18-11-1-0-0-0)
Syn. Donax (Donax) carinata S. C. T. Hanley, 1843;
Donax (Donax) culminatus P. P. Carpenter, 1857;
Donax (Donax) rostratus C. B. Adams, 1852
Ref. Bernard, 1983 p 49

scalpellum J. E. Gray, 1823 [T]
(3-4-4-0-24-2-0-18-11-2-0-0-0)
Ref. Keen, 1971 p 239

transversus G. B. Sowerby, 1825
(3-4-4-0-24-2-0-18-11-3-0-0-0)
Syn. Donax (Donax) elongata authors [not J. Mawe, 1823];
Donax (Donax) scalpellum authors [not J. E. Gray, 1823];
Donax (Donax) transversus G. B. Sowerby, 1825
Ref. Bernard, 1983 p 49