Nassarina whitei (P. Bartsch, 1928) Ecuador6,1 mm
Anachis wieserae (W.C. Mansfield, 1930) Florida
Anachis xani E. Rolán & S. Gori, 2012 Gabon, Principe Island5 mm
Mitrella xenia (W.H. Dall, 1919) Costa Rica22,7 mm
Aesopus xenicus H.A. Pilsbry & H.N. Lowe,1932 Mexico West7 mm
Mitrella yabei S. Nomura, 1935 Japan, Wakayama
Mokumea yuhitai T. Habe, 1991
Anachis yukitai T. Habe, 1991 Japan
Pyrene zebra (J.E. Gray)
Mokumea zeleensis J. Drivas & M. Jay, 1997
Retizafra zingiber K. Monsecour& D. Monsecour, 2016
Strombina zorritosensis (FOSSIL) A.A. Olsson, 1932 † Ecuador, Esmeraldas, Muisne