Amphichaena gracilis Mörch, 1860 accepted as Donax kindermanni (R. A. Philippi, 1847) (original description)
Arca (Argina) vespertina Mörch, 1861 accepted as Lunarca brevifrons (G. B. Sowerby I, 1833) (original description)
Arca (Scapharca) corculum Mörch, 1861 accepted as Anadara bifrons (P. P. Carpenter, 1857) (original description)
Axinaea (Axinactis) Mörch, 1861 accepted as Axinactis Mörch, 1861 (original description)
Callista longispina Mörch, 1861 accepted as Hysteroconcha multispinosa (G. B. Sowerby II, 1851) (original description)
Codakia (Ctena) Mörch, 1861 accepted as Ctena Mörch, 1861 (original description)
Dactylus Mörch, 1861 accepted as Leiosolenus (Labis) Dall, 1916 represented as Leiosolenus P. P. Carpenter, 1857 (original description)
Dentalium oerstedii Mörch, 1861 (original description)
Egetaria Mörch, 1861 accepted as Polymesoda Rafinesque, 1820 (original description)
Hippella Mörch, 1861 accepted as Condylocardia F. Bernard, 1896 (original description)
Hippella hippopus Mörch, 1861 accepted as Condylocardia hippopus (Mörch, 1861) (original description)
Lazaria obversa Mörch, 1861 accepted as Carditamera radiata (G. B. Sowerby I, 1833) (original description)
Lepeta puntarenae Mörch, 1860 accepted as Plesiothyreus puntarenae (Mörch, 1860) (original description)
Mactra bistrigata Mörch, 1860 accepted as Mulinia pallida (Broderip & G. B. Sowerby I, 1829) (original description)
Mactra subalata Mörch, 1860 accepted as Mactrellona subalata (Mörch, 1860) (original description)
Pholas retifer Mörch, 1861 accepted as Pholas chiloensis Molina, 1782 (original description)
Polymesoda (Egetaria) pullastra (Mörch, 1861) accepted as Polymesoda notabilis (Deshayes, 1855) (original description)
Sanguinolaria tellinoides elongata Mörch, 1860 accepted as Sanguinolaria tellinoides A. Adams, 1850 (original description)
Semele fucata Mörch, 1861 accepted as Semele bicolor (C. B. Adams, 1852) (original description)
Semele verrucosa Mörch, 1860 (original description)
Solen oerstedii Mörch, 1860 (original description)
Strigilla costulifera Mörch, 1860 accepted as Strigilla dichotoma (R. A. Philippi, 1846) (original description)
Strigilla interrupta Mörch, 1860 (original description)
Strigilla magna Mörch, 1860 accepted as Strigilla cicercula (R. A. Philippi, 1846) (original description)
Strigilla serrata Mörch, 1860 (original description)
Terebra pachyzoma Mörch, 1861 accepted as Terebra formosa Deshayes, 1857 (original description)
Thracia carnea Mörch, 1860 accepted as Macoploma siliqua (C. B. Adams, 1852) (original description)
Unio imbricatus Mörch, 1861 accepted as Arotonaias imbricata (Mörch, 1861) (original description)
Venus troglodytes Mörch, 1861 accepted as Chioneryx squamosa (P. P. Carpenter, 1857) (original description)