Ptychocardia rudis C. Hedley, 1916
Ptychocardia vanhoeffeni K.H.J. Thiele, 1912
Reloncavia chilenica (T. Soot-Ryen, 1957)
Reloncavia mactroides (R. Tate & W.L. May,1900)
Kidderia acrobeles (H.H. Suter, 1913)
Kidderia aupouria A.W.B. Powell, 1933
Kidderia bicolor (E.C. Von Martens, 1885)
Kidderia bisulcata (E.A. Smith, 1877)
Kidderia campbellica N.H. Odhner, 1924
Kidderia costata N.H. Odhner, 1924
Kidderia fiordlandica C.A. Fleming, 1948
Kidderia marshalli C.A. Fleming, 1948
Kidderia minuta W.H. Dall, 1876
Kidderia oblonga (E.A. Smith, 1898)
Kidderia rakiura A.W.B. Powell, 1939
Eugaimardia perplexa (B.C. Cotton, 1931)