Aligena moloti (FOSSIL) Staadt 1904 †
Rochefortia mortoni P.H. Valentich-Scott,1998
Aligena muris (J.P. Rosewater, 1984)
Neaeromya myaciformis W.H. Dall, 1916
Planikellya nassauensis (FOSSIL) R. Marquet, Lenaerts& Laporte, 2012 †
Borniola neozelanica A.W.B. Powell, 1937
Lepton neozelanicum (FOSSIL) C.R. Laws, 1950 †
Erycina nipponensis S. Nomura & K.M. Hatai,1940
Lasaea nipponica (C. Linnaeus, 1758)
Erycina nitidissima (FOSSIL) G.P. Deshayes, 1857 †
Hemilepton nitidum (W. Turton, 1822)
Aligena nucea W.H. Dall, 1913
Neaeromya obliqua (H.W. Harry, 1969)
Orobitella oblonga (P.P. Carpenter, 1857)
Scacchia oblonga (R.A. Philippi, 1836)
Pristes oblongus Carpenter, 1864
Erycina obsoleta (FOSSIL) G.P. Deshayes, 1858 †
Pythinella occidentalis (E.A. Smith, 1885)
Aligena orbicularis (FOSSIL) (Wood, 1840 †)
Lepton orientale (J.C. Melvill, 1910)
Hitia ovalis W.H. Dall, P. Bartsch& H.A. Rehder, 1938
Scacchia ovata R.A. Philippi, 1844
Parabornia palliopapillata L.R.L. Simone, 2001
Waldo parasiticus (W.H. Dall, 1876)
Lasaea parengaensis A.W.B. Powell, 1935
Mancikellia parrussetensis (G. Giribet & A. Peñas,1999)
Melliteryx parva (G.P. Deshayes, 1856)
Erycina parvula (FOSSIL) G.P. Deshayes, 1858 †
Borniola pasca B.K. Raines & M. Huber,2012
Waldo paucitentaculatus D.G. Zelaya & C.F. Ituarte,2013
Macrodiceras pcelincevi (FOSSIL) Karczewski, 1969 †
Erycina pellucida (FOSSIL) J.B.P.A. Lamarck, 1805 †
Arthritica perfragilis (FOSSIL) C.R. Laws, 1950 †
Erycina periscopiana W.H. Dall, 1899
Aligena peruviana (A.A. Olsson, 1961)