Genus Penitella A. Valenciennes, 1846 in A. Petit-Thouars, 1846

(3-4-3-2-1-1-2-28-0-0-0-0-0)
Ref. Amer. Fish. Soc., 1988 p 46
Bernard, 1983 p 61
Syn. Navea J. E. Gray, 1851;
Penicilla T. A. Conrad, 1854
Ref. Abbott, 1974 p 545
Vaught, 1989 p 138
Vokes, 1980 p 189

beauiana C. A. Recluz, 1853
(3-4-3-2-1-1-2-28-0-1-0-0-0)
[=Martesia (Martesia) striata (C. v Linne, 1758)]
Ref. Bernard, 1983 p 60

concamerata G. P. Deshayes, 1839
(3-4-3-2-1-1-2-28-0-2-0-0-0)
[=Penitella penita (T. A. Conrad, 1837)]
Ref. Abbott, 1974 p 545

conradi A. Valenciennes, 1846 [T]
(3-4-3-2-1-1-2-28-0-3-0-0-0)
Abalone Piddock, Conrad's Piddock
Ref. Amer. Fish. Soc., 1988 p 46
Syn. Navea newcombii G. W. Tryon, 1865;
Penitella intercalata (P. P. Carpenter, 1855);
Penitella parva G. W. Tryon, 1865;
Penitella subglobosa J. E. Gray, 1851
Ref. Abbott, 1974 p 545 bw
Syn. Martesia (Martesia) intercalata P. P. Carpenter, 1857;
Navea newcombii G. W. Tryon, 1865;
Navea subglobosa J. E. Gray, 1851;
Penitella parva G. W. Tryon, 1865 [not Penitella chiloensis parva G. B. Sowerby, 1834]
Ref. Bernard, 1983 p 61

curvata G. W. Tryon, 1865
(3-4-3-2-1-1-2-28-0-4-0-0-0)
[=Penitella penita (T. A. Conrad, 1837)]
Ref. Abbott, 1974 p 545
Bernard, 1983 p 61

fitchi R. D. Turner, 1955
(3-4-3-2-1-1-2-28-0-5-0-0-0)
Fitch Piddock, Fitch's Piddock
Ref. Abbott, 1974 p 545
Amer. Fish. Soc., 1988 p 46
Bernard, 1983 p 61

gabbi (G. W. Tryon, 1863)
(3-4-3-2-1-1-2-28-0-6-0-0-0)
Gibb's Piddock
Ref. Abbott, 1974 p 546 bw
Syn. Pholas crispata authors [not C. v Linne, 1758];
Zirphaea gabbii G. W. Tryon, 1863
Ref. Bernard, 1983 p 61

"gabbii (G. W. Tryon, 1863)" authors
(3-4-3-2-1-1-2-28-0-7-0-0-0)
Gabb Piddock
Ref. Amer. Fish. Soc., 1988 p 46

intercalata (P. P. Carpenter, 1855)
(3-4-3-2-1-1-2-28-0-8-0-0-0)
[=Penitella conradi A. Valenciennes, 1846]
Ref. Abbott, 1974 p 545

kamakurensis (M. Yokoyama, 1922)
(3-4-3-2-1-1-2-28-0-9-0-0-0)
Syn. Jouannetia kamakurensis M. Yokoyama, 1922;
Navea subglobosa authors [not J. E. Gray, 1851];
Pholadidea (Monoplax) acutithyra S. Thang, C. Tsi & K. Li, 1960;
Pholadidea (Monoplax) dolichothyra S. Thang, C. Tsi & K. Li, 1960;
Pholas (Pholas) penita authors [not T. A. Conrad, 1837]
Ref. Bernard, 1983 p 61

"kamakurensis (M. Yokoyama, 1922)" of authors
(3-4-3-2-1-1-2-28-0-10-0-0-0)
Alaska Piddock
Ref. Amer. Fish. Soc., 1988 p 46

parva G. W. Tryon, 1865 [not Penitella chiloensis parva G. B. Sowerby, 1834]
(3-4-3-2-1-1-2-28-0-11-0-0-0)
[=Penitella conradi A. Valenciennes, 1846]
Ref. Abbott, 1974 p 545
Bernard, 1983 p 61

penita (T. A. Conrad, 1837)
(3-4-3-2-1-1-2-28-0-12-0-0-0)
Flap-tip Piddock, Flap-tipped Piddock
Ref. Amer. Fish. Soc., 1988 p 46
Syn. Penitella concamerata G. P. Deshayes, 1839;
Penitella curvata G. W. Tryon, 1865;
Penitella sagitta "Stearns" (W. H. Dall, 1916);
Penitella spelaea T. A. Conrad, 1855
Ref. Abbott, 1974 p 545 bw
Syn. Penitella curvata G. W. Tryon, 1865;
Penitella spelaea T. A. Conrad, 1855;
Pholadidea sagitta W. H. Dall, 1916;
Pholas (Pholas) concamerata G. P. Deshayes, 1839;
Pholas (Pholas) penita T. A. Conrad, 1837
Ref. Bernard, 1983 p 61

rosea C. B. Adams, 1850
(3-4-3-2-1-1-2-28-0-13-0-0-0)
[=Martesia (Martesia) striata (C. v Linne, 1758)]
Ref. Bernard, 1983 p 60

sagitta "Stearns" (W. H. Dall, 1916)
(3-4-3-2-1-1-2-28-0-14-0-0-0)
[=Penitella penita (T. A. Conrad, 1837)]
Ref. Abbott, 1974 p 545

spelaea T. A. Conrad, 1855
(3-4-3-2-1-1-2-28-0-15-0-0-0)
[=Penitella penita (T. A. Conrad, 1837)]
Ref. Abbott, 1974 p 545
Bernard, 1983 p 61

subglobosa J. E. Gray, 1851
(3-4-3-2-1-1-2-28-0-16-0-0-0)
[=Penitella conradi A. Valenciennes, 1846]
Ref. Abbott, 1974 p 545

tubigera A. Valenciennes, 1846
(3-4-3-2-1-1-2-28-0-17-0-0-0)
Ref. Bernard, 1983 p 61

turnerae J. W. Evans & Fisher, 1966
(3-4-3-2-1-1-2-28-0-18-0-0-0)
Turner Piddock
Ref. Amer. Fish. Soc., 1988 p 46

wilsonii T. A. Conrad, 1849
(3-4-3-2-1-1-2-28-0-19-0-0-0)
[=Pholadidea (Hatasia) melanura (G. B. Sowerby, 1834)]
Ref. Bernard, 1983 p 61
Keen, 1971 p 278

xilophaga A. Valenciennes in A. Petit-Thouars, 1846
(3-4-3-2-1-1-2-28-0-20-0-0-0)
[=Martesia (Martesia) striata (C. v Linne, 1758)]
Ref. Bernard, 1983 p 60