Volutaxis scalella (E.C. Von Martens, 1898) Costa Rica
Streptostyla shuttleworthi (L. Pfeiffer, 1856)
Miraradula similaris (H. Strebel, 1882) Mexico, Veracruz
Euglandina singleyana W.G. Binney, 1892 USA, Texas
Streptostyla sololensis J.C.H. Crosse& P.H. Fischer, 1869 Guatemala24,7 mm
Euglandina sowerbyana (L. Pfeiffer, 1846) Costa Rica
Proameria speciosa (L. Pfeiffer, 1856) Mexico, Veracruz
Pseudosubulina splendens F.G. Thompson, 1959 Guatemala
Guillarmodia stenotrema (F.G. Thompson, 1995) Mexico, Acapulco
Varicoglandina stigmatica (R.J. Shuttleworth, 1852) Mexico, Veracruz
Mayaxis stolli (E.C. Von Martens, 1898) Guatemala
Volutaxis strebeli (H.A. Pilsbry, 1907) Mexico, Veracruz
Streptostyla streptostyla (L. Pfeiffer, 1846) Mexico, Veracruz
Euglandina striata (O.F. Müller, 1774) Ecuador49 mm
Euglandina striata striatula J.H. Vernhout, 1914 Suriname24 mm
Spiraxis subcretaxis (H.A. Pilsbry, 1930)
Versutaxis subgranum (H.B. Baker, 1939) Mexico, Veracruz
Rectaxis subnitidus (H.B. Baker, 1939) Mexico, Puebla
Versutaxis subopeas (H.B. Baker, 1939) Mexico, Puebla
Volutaxis subrectaxis H.A. Pilsbry Caymans
Rectaxis subtilis (H.B. Baker, 1939) Mexico, Veracruz
Volutaxis subulinus (H.B. Baker, 1940) Mexico, Puebla
Euglandina subvaricosa (J.A. Albers, 1854) Colombia43 mm
Proameria sulcifera (E.C. Von Martens, 1891) Mexico, Jalisco
Volutaxis sulciferus (P.M.A. Morelet, 1851) Mexico, Veracruz
Streptostyla sumichrasti C.M.F. Ancey, 1903 Mexico, Oaxaca
Streptostyla supracostata (H.A. Pilsbry, 1909) Mexico, San Luis Potosì
Euglandina surinamensis J.H. Vernhout, 1914 Brazil, Amapà48 mm
Pseudosubulina tastensis (J.G. Cooper, 1894) Mexico, Baja California Sur, La Paz
Euglandina tenella (H. Strebel, 1875) Mexico, Veracruz
Volutaxis tenuecostatus H. Strebel, 1882 Mexico, Veracruz
Volutaxis tenuis (L. Pfeiffer, 1868) Mexico, Veracruz
Proameria tepicensis (H.A. Pilsbry& T.D.A. Cockerell, 1926) Mexico, Nayarit
Spiraxis terebella (C.B. Adams, 1849) Jamaica
Euglandina texasiana (L. Pfeiffer, 1857) Florida