Crypta nautarum Mörch, 1877 accepted as Crepidula fornicata (Linnaeus, 1758) (original description)
Dolium antillarum Mörch, 1877 accepted as Tonna galea (Linnaeus, 1758) (original description)
Dolium antillarum var. brasiliana Mörch, 1877 accepted as Tonna galea (Linnaeus, 1758) (original description)
Dolium perdix brasiliana Mörch, 1877 (original description)
Dolium perdix occidentalis Mörch, 1877 accepted as Tonna pennata (Mörch, 1853) (original description)
Fossarus fischeri Mörch, 1877 (original description)
Hipponix (Krebsia) Mörch, 1877 accepted as Krebsia Mörch, 1877 accepted as Hipponix Blainville, 1819 (original description)
Murex niveus Gmelin, 1791 accepted as Ranularia cynocephala (Lamarck, 1816) (source of synonymy)
Ovula carolinensis Mörch, 1877 accepted as Simnialena uniplicata (G. B. Sowerby II, 1849) (original description)
Pyrula fortior Mörch, 1877 accepted as Ficus papyratia carolae Clench, 1945 (original description)
Ranella (Aspella) Mörch, 1877 accepted as Aspella Mörch, 1877 (original description)
Sigaretus rangii Mörch, 1877 accepted as Lamellaria perspicua (Linnaeus, 1758) accepted as Marsenia perspicua (Linnaeus, 1758) (original description)
Triton (Buccinatorium) Mörch, 1877 accepted as Charonia Gistel, 1847 (original description)
Triton (Lampusia) krebsii Mörch, 1877 accepted as Monoplex krebsii (Mörch, 1877) (original description)
Triton (Lampusia) rubecula occidentale Mörch, 1877 accepted as Septa occidentalis (Mörch, 1877) (original description)
Triton (Linatella) poulsenii Mörch, 1877 accepted as Linatella caudata (Gmelin, 1791) (original description)
Triton chlorostomum var. pumilio Mörch, 1877 accepted as Monoplex nicobaricus (Röding, 1798) (original description)
Vanikoro oxychone Mörch, 1877 accepted as Megalomphalus oxychone (Mörch, 1877) (original description)

Lesser Antilles for Sigaretus rangii Mörch, 1877