Subgenus (Psammotreta) W. H. Dall, 1900

(3-4-4-0-24-14-1-39-3-0-0-0-0)
Ref. Keen, 1971 p 231

aurora (S. C. T. Hanley, 1844) [T]
(3-4-4-0-24-14-1-39-3-1-0-0-0)
Ref. Abbott, 1974 p 508
Syn. ? Tellina (Tellina) panamensis R. A. Philippi, 1844
Ref. Keen, 1971 p 231 d

biangulata (P. P. Carpenter, 1856)
(3-4-4-0-24-14-1-39-3-2-0-0-0)
[=Psammotreta (Florimetis) obesa (G. P. Deshayes, 1855)]
Ref. Abbott, 1974 p 508

brevifrons (T. Say, 1834)
(3-4-4-0-24-14-1-39-3-3-0-0-0)
Ref. Keen, 1971 p 231

? ephippium (L. Spengler, 1798)
(3-4-4-0-24-14-1-39-3-4-0-0-0)
Saddle Grooved Macoma
Ref. Abbott & Dance, 1982 p 344 c

lacunosa J. S. Schroter
(3-4-4-0-24-14-1-39-3-5-0-0-0)
[=Psammotreta (Psammotreta) papyracea (J. F. Gmelin, 1791)]
Ref. Abbott & Dance, 1982 p 344

mazatlanica (G. P. Deshayes, 1855)
(3-4-4-0-24-14-1-39-3-6-0-0-0)
Ref. Keen, 1971 p 231 bw d
Syn. Tellina (Tellina) mazatlanica G. P. Deshayes, 1855
Ref. Bernard, 1983 p 45

? papyracea (J. F. Gmelin, 1791)
(3-4-4-0-24-14-1-39-3-7-0-0-0)
Paper Grooved Macoma
Syn. Psammotreta (Psammotreta) lacunosa J. S. Schroter
Ref. Abbott & Dance, 1982 p 344 c

plebia (S. C. T. Hanley, 1844)
(3-4-4-0-24-14-1-39-3-8-0-0-0)
Syn. Tellina (Tellina) plebia S. C. T. Hanley, 1844
Ref. Bernard, 1983 p 45

? plicata (A. Valenciennes, 1846)
(3-4-4-0-24-14-1-39-3-9-0-0-0)
Plicate Grooved Macoma
Ref. Abbott & Dance, 1982 p 344 c

pura (A. A. Gould, 1853)
(3-4-4-0-24-14-1-39-3-10-0-0-0)
Ref. Keen, 1971 p 231 bw
Syn. Tellina (Tellina) pura A. A. Gould, 1853
Ref. Bernard, 1983 p 45

viridotincta (P. P. Carpenter, 1856)
(3-4-4-0-24-14-1-39-3-11-0-0-0)
Syn. Macoma (Macoma) pacis H. A. Pilsbry & H. N. Lowe, 1932;
Scrobicularia viridotincta P. P. Carpenter, 1856;
Tellina (Tellina) casta S. C. T. Hanley, 1844 [not Psammobia casta L. A. Reeve, 1857]
Ref. Bernard, 1983 p 46
Syn. Macoma (Macoma) pacis H. A. Pilsbry & H. N. Lowe, 1932
Ref. Keen, 1971 p 231 d