Thaumastus inca (A.V.M.D. D'Orbigny,1835) Bolivia
Thaumastus incarnum H.A. Pilsbry, 1944 Peru, Ancash
Thaumastus indentatus S.I. Da Costa, 1901 Ecuador
Thaumastus insolitus H.B. Preston, 1909 Peru, Junin
Thaumastus integer (L. Pfeiffer, 1855) Peru
Scholvienia iserni (R.A. Philippi, 1867) Peru
Scholvienia jaspideus (P.M.A. Morelet, 1863) Bolivia
Scholvienia jelskii (W. . Lubomirski, 1879) Peru, Junin25 mm
Thaumastiella koepckei (A. Zilch, 1953)
Thaumastus largillierti (R.A. Philippi, 1845) Brazil, Guarapari63,8 mm
Thaumastus loxostomus (L. Pfeiffer, 1853) Colombia
Thaumastus magnificus (J.P.S. Grateloup, 1839) Peru
Thaumastus mahogani (L. Pfeiffer, 1842) Chile
Thaumastus melanocheilus (P. Nyst, 1845) Paraguay77 mm
Thaumastus monozonalis (G.P. Deshayes, 1820) South America
Thaumastus nehiringi (E.C. Von Martens, 1889) Brazil67,2 mm
Thaumastus occidentalis W.K. Weyrauch, 1960 Peru, Cajamarca
Thaumastus olmosensis A. Zilch, 1954 Peru
Thaumastus orcesi W.K. Weyrauch, 1967 Ecuador49,4 mm
Thaumastus ortizianus F. Haas, 1955 Peru
Megaspira pilsbryi H.A. Rehder, 1945 Brazil38 mm
Thaumastus plumbeus (L. Pfeiffer, 1855) Venezuela
Scholvienia porphyrius (L. Pfeiffer, 1847) Peru, Lima48 mm
Thaumastus pseudoiostomus P. von Ströbel, 1909 Chile
Thaumastus requieni (L. Pfeiffer, 1853) Brazil
Thaumastus robertsi H.A. Pilsbry, 1944 Peru, Junin
Megaspira ruschenbergiana J.C. Jay, 1836 Brazil, Rio de Janeiro63,7 mm
Thaumastus salteri G.B. Sowerby, 1890 Peru, Cajamarca
Thaumastus sangoae (J.J. von Tschudi, 1852) Peru, Areguipa80 mm
Thaumastus sarcochrous H.A. Pilsbry, 1897 Peru, Junin27 mm
Thaumastus spixii (J.A. Wagner, 1827) Brazil81,5 mm
Thaumastus spixii paraguayanus (C.M.F. Ancey, 1888) Paraguay27,1 mm
Scholvienia taeniolus (P. Nyst, 1845) South America
Scholvienia tarmensis (R.A. Philippi, 1867) Peru29 mm
Thaumastus tatutor F.P. Jousseaume, 1887 Colombia