Amnipila Pilsbry, 1956 (basis of record)
Cercimelania P. Fischer & Crosse, 1892 accepted as Pachychilus I. Lea & H. C. Lea, 1851 (source of synonymy)
Melania corvina Morelet, 1849 accepted as Pachychilus corvinus (Morelet, 1849) (subsequent type designation)
Pachycheilus H. Adams & A. Adams, 1854 accepted as Pachychilus I. Lea & H. C. Lea, 1851 (source of synonymy)
Pachychilus (Oxymelania) apheles F. G. Thompson, 1967 represented as Pachychilus apheles F. G. Thompson, 1967 (basis of record)
Pachychilus (Oxymelania) corpulentus F. G. Thompson, 1967 represented as Pachychilus corpulentus F. G. Thompson, 1967 (basis of record)
Pachychilus (Pilsbrychilus) J. P. E. Morrison, 1951 accepted as Pachychilus I. Lea & H. C. Lea, 1851 (source of synonymy)
Pachychilus apis (I. Lea & H. C. Lea, 1851) (basis of record)
Pachychilus chrysalis (Brot, 1872) (basis of record)
Pachychilus cinereus (Morelet, 1849) (basis of record)
Pachychilus corvinus (Morelet, 1849) (additional source)
Pachychilus dalli Pilsbry, 1896 (basis of record)
Pachychilus gassiesii (Reeve, 1860) (basis of record)
Pachychilus glaphyra (Morelet, 1849) accepted as Pachychilus glaphyrus (Morelet, 1849) (basis of record)
Pachychilus glaphyra potomarchus Pilsbry, 1893 accepted as Pachychilus potomarchus Pilsbry, 1893 (basis of record)
Pachychilus godmanni (Tristram, 1863) (basis of record)
Pachychilus gracilis Tristram, 1864 (basis of record)
Pachychilus hellerii (Brot, 1872) (basis of record)
Pachychilus hinkleyi (W. B. Marshall, 1920) (basis of record)
Pachychilus intermedius (von dem Busch, 1844) (basis of record)
Pachychilus jansoni H. Adams, 1871 (basis of record)
Pachychilus lacustris (Morelet, 1849) (basis of record)
Pachychilus largillierti (R. A. Philippi, 1843) (basis of record)
Pachychilus liebmanni (R. A. Philippi, 1848) (basis of record)
Pachychilus monachus Pilsbry & Hinkley, 1910 (additional source)
Pachychilus olssoni Pilsbry, 1950 (basis of record)
Pachychilus panucula (Morelet, 1851) (basis of record)
Pachychilus pasionensis Pilsbry, 1956 (basis of record)
Pachychilus pila var. pilula Pilsbry & Hinkley, 1910 (basis of record)
Pachychilus planensis (I. Lea, 1858) (basis of record)
Pachychilus pluristriatus (Say, 1831) (status source)
Pachychilus pottsianus Hinkley, 1920 (basis of record)
Pachychilus salvini (Tristram, 1864) (basis of record)
Pachychilus sargi (Crosse & P. Fischer, 1875) (basis of record)
Pachychilus subexaratus Crosse & P. Fischer, 1891 (subsequent type designation)
Pachychilus subexaratus Crosse & P. Fischer, 1891 (additional source)
Pachychilus subnodosus (R. A. Philippi, 1847) (basis of record)
Pachychilus tristrami Crosse & P. Fischer, 1892 accepted as Pachychilus gracilis Tristram, 1864 (basis of record)
Pachychilus turati (A. Villa & G. B. Villa, 1854) (basis of record)
Sphaeromelania Rovereto, 1899 accepted as Pachychilus I. Lea & H. C. Lea, 1851 (source of synonymy)

Mexico for Pachychilus (Oxymelania) apheles F. G. Thompson, 1967 

Holotype FLMNH 19756, identified as Pachychilus (Oxymelania) apheles F. G. Thompson, 1967
Lectotype MHNG 134, geounit Tehuantepec Gulf, identified as Melania chrysalis Brot, 1872
Lectotype NHMUK 20070009, identified as Pachychilus cumingii I. Lea & H. C. Lea, 1851
Syntype USNM 119732, geounit Mexico, identified as Melania apis I. Lea & H. C. Lea, 1851