Anculosa pupoidea J.G. Anthony, 1854
Elimia pydasii I. Lea, 1862
Elimia pygmaea H.H. Smith, 1936
Gyrotoma pyramidata R.J. Shuttleworth, 1845
Pleurocera pyrenella T.A. Conrad, 1834
Goniobasis rhombica (J.G. Anthony, 1854)
Holandriana ricinus (FOSSIL) (M. von Neumayr, 1875 †)
Goniobasis rubella I. Lea, 1862
Lithasia salebrosa (T.A. Conrad, 1834)
Goniobasis semicarinata (T. Say, 1829)
Elimia semigradata (I. Lea, 1862)
Holandriana serbica (FOSSIL) (Živkovic, 1893 †)
Elimia showalteri I. Lea, 1862
Goniobasis simplex (T. Say, 1825)
Anculosa smithi C. Goodrich, 1922
Goniobasis sordida (I. Lea, 1841)
Holandriana speciosa (J.R. Bourguignat, 1884)
Lithasia spicula R.L. Minton, Savarese& G.B. Campbell, 2005
Goniobasis spillmanii I. Lea, 1862
Leptoxis squalida (I. Lea, 1845)
Goniobasis strialuta (I. Lea, 1842)
Elimia striatula (I. Lea, 1842)
Pleurocera striatum (I. Lea, 1863)
Elimia strigosa (I. Lea, 1841)
Anculosa subglobosa T. Say, 1825
Goniobasis sulcosa (I. Lea, 1841)
Goniobasis suturalis (S.S. Haldeman, 1840)
Anculosa symmetrica S.S. Haldeman, 1841
Leptoxis taeniata T.A. Conrad, 1834
Anculosa tainiata T.A. Conrad, 1834
Anculosa taitiana I. Lea, 1841
Elimia tecta (J.G. Anthony, 1854)
Elimia tenera (J.G. Anthony, 1861)
Elimia teres (I. Lea, 1841)
Elimia teretria F.G. Thompson, 2000