Aplexa aurantia P. P. Carpenter, 1857 accepted as Mexinauta aurantius (P. P. Carpenter, 1857) (additional source)
Aplexa tapanensis (Crosse & P. Fischer, 1882) accepted as Mayabina tapanensis (Crosse & P. Fischer, 1882) (basis of record)
Chondropoma martensianum Pilsbry, 1900 accepted as Gouldipoma trochleare (L. Pfeiffer, 1852) (original description)
Glandina ghiesbreghti (L. Pfeiffer, 1856) accepted as Euglandina ghiesbreghti (L. Pfeiffer, 1856) (basis of record)
Helicina lirata L. Pfeiffer, 1847 accepted as Lucidella lirata (L. Pfeiffer, 1847) (additional source)
Neritina virginea (Linnaeus, 1758) accepted as Vitta virginea (Linnaeus, 1758) (additional source)
Opeas micra (A. d'Orbigny, 1835) accepted as Allopeas micra (A. d'Orbigny, 1835) (additional source)
Oxystyla princeps (Broderip, 1833) accepted as Orthalicus princeps (Broderip, 1833) (basis of record)
Pachychilus vulneratus P. Fischer & Crosse, 1892 accepted as Pachychilus chrysalis (Brot, 1872) (basis of record)
Planorbis tenuis Dunker, 1850 accepted as Planorbella tenuis (Dunker, 1850) (additional source)
Planorbula obstructa (Morelet, 1849) accepted as Biomphalaria obstructa (Morelet, 1849) (basis of record)
Polygyra yucatanea var. helictomphala (L. Pfeiffer, 1856) accepted as Polygyra yucatanea (Morelet, 1849) (basis of record)
Subulina trochlea (L. Pfeiffer, 1842) accepted as Subulina octona (Bruguière, 1789) (basis of record)
Succinea guatemalensis Morelet, 1849 (additional source)
Thysanophora conspurcatella (Morelet, 1851) (additional source)
Unio (Lampsilis) rovirosai Pilsbry, 1900 accepted as Potamilus rovirosai (Pilsbry, 1900) (original description)