1. Species Pecten (Pseudamusium) aequatorialis Thiele, 1931 accepted as Cyclopecten aequatorialis (Thiele, 1931) (unaccepted > superseded combination)
2. Species Pecten (Pseudamusium) arces Dall, 1913 accepted as Delectopecten vancouverensis (Whiteaves, 1893) (unaccepted > junior subjective synonym)
3. Species Pecten (Pseudamusium) liriope Dall, 1908 accepted as Cyclopecten liriope (Dall, 1908) (superseded combination)
4. Species Pecten (Pseudamusium) neoceanicus Dall, 1908 accepted as Hyalopecten neoceanicus (Dall, 1908) (superseded combination)
5. Species Pecten (Pseudamusium) panamensis Dall, 1908 accepted as Delectopecten zacae (Hertlein, 1935) (invalid: junior homonym of P. panamensis Dall, 1898; Pecten zacae is a replacement name)
6. Species Pecten (Pseudamusium) polyleptus Dall, 1908 accepted as Delectopecten polyleptus (Dall, 1908) (superseded combination)
7. Species Pecten (Pseudamusium) randolphi (Dall, 1897) accepted as Delectopecten vancouverensis (Whiteaves, 1893)
8. Species Pecten (Pseudamusium) reticulus Dall, 1886 accepted as Cyclopecten reticulus (Dall, 1886) (unaccepted > superseded combination)
9. Species Pecten (Pseudamusium) sigsbeei Dall, 1886 accepted as Pectinella sigsbeei (Dall, 1886) (unaccepted > superseded combination)
10. Species Pecten (Pseudamusium) thalassinus Dall, 1886 accepted as Cyclopecten thalassinus (Dall, 1886) (unaccepted > superseded combination)
11. Species Pecten (Pseudamusium) vancouverensis Whiteaves, 1893 accepted as Delectopecten vancouverensis (Whiteaves, 1893) (original combination)

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