Subgenus (Hatasia) J. E. Gray, 1851

(3-4-3-2-1-1-2-32-3-0-0-0-0)
Ref. Bernard, 1983 p 61
Keen, 1971 p 278
Syn. (Hastasia) authors; (Hatosia) authors
Ref. Vaught, 1989 p 138
[see also as Genus]

esmeraldensis (A. A. Olsson, 1961)
(3-4-3-2-1-1-2-32-3-1-0-0-0)
Ref. Keen, 1971 p 278 bw
Syn. Hatasia esmeraldensis A. A. Olsson, 1961
Ref. Bernard, 1983 p 61

melanura (G. B. Sowerby, 1834)
(3-4-3-2-1-1-2-32-3-2-0-0-0)
Ref. Abbott, 1974 p 546
Syn. Penitella wilsonii T. A. Conrad, 1849;
Pholas (Pholas) melanura G. B. Sowerby, 1834
Ref. Bernard, 1983 p 61
Syn. Penitella wilsonii T. A. Conrad, 1849
Ref. Keen, 1971 p 278 d

quadra (G. B. Sowerby, 1834)
(3-4-3-2-1-1-2-32-3-3-0-0-0)
Ref. Abbott, 1974 p 546
Keen, 1971 p 280 bw
Syn. Pholas (Pholas) quadra G. B. Sowerby, 1834
Ref. Bernard, 1983 p 61

tridens (J. E. Gray, 1843)
(3-4-3-2-1-1-2-32-3-4-0-0-0)
Syn. Talona tridens J. E. Gray in Dieffenbach, 1843
Ref. Bernard, 1983 p 61

tubifera (G. B. Sowerby, 1834)
(3-4-3-2-1-1-2-32-3-5-0-0-0)
Ref. Abbott, 1974 p 546
Keen, 1971 p 280 d
Syn. Pholas (Pholas) tubifera G. B. Sowerby, 1834
Ref. Bernard, 1983 p 61