Subgenus (Pholadidea) W. H. Turton, 1819

(3-4-3-2-1-1-2-32-6-0-0-0-0)

loscombiana (W. H. Turton, 1819)
(3-4-3-2-1-1-2-32-6-1-0-0-0)
Ref. Abbott, 1974 p 546

minuscula W. H. Dall, 1908
(3-4-3-2-1-1-2-32-6-2-0-0-0)
[=Martesia (Martesia) fragilis A. E. Verrill & K. J. Bush, 1898]
Ref. Bernard, 1983 p 60
Keen, 1971 p 276

sagitta W. H. Dall, 1916
(3-4-3-2-1-1-2-32-6-3-0-0-0)
[=Penitella penita (T. A. Conrad, 1837)]
Ref. Bernard, 1983 p 61