BY R. TATE AND W. L. MAY, 423 



*M. Tasmanica, Ten.-Woods (Gouldia), P.R.S.Tasm., 1877, p. 158; 

 Myochama Woodsi, Petterd, Journ. Conch,, 1884, p. 145. 

 Long Bay, D'Entrecasteaux Channel (both types !). 



Genus A n a t i n a, Lamarck, 1809. 



*A. Angasi, Crosse & Fischer (Periploma), Journ. de Conch., 

 1864, p. 349: 1865, p. 427, t. 11, f. 1. 

 Tasmania (cotype) ; Oyster Ba}^, Frederick Henry Bay ! 

 (Census); Circular Head, W. L. }fay. 



*A. Tasmanica, Reeve, Conch. Icon., f. 20. 

 A. recta, Reeve, op. cit., f. 24. 



Type, not common (Census); Ralph's Bay, Frederick Henry 

 Bay, &c., W. L. May. 



*A. CRECCiNA, Reeve, Conch. Icon., f. 12. 



Kelso, rare (Census); Circular Head, W. L. May. 



Genus Thracia, Blainville, 1824. 



*T. MODESTA, Angas, P.Z.S., 1867, t. 44, f. 3. 

 Derwent Estuary, W. L. May. 



Family MACTRID^. 

 Genus Mactra, Lamarck, 1799. 



*M. Matthewsi, Tate, T.R.S.S.Aust., xi., 1889, p. 60, t. 11, f. 4. 

 Loc. 1 (Coll. W. F. Petterd !). 



*M. polita, Chemnitz, 1782, vi., 222, £. 216-7. 

 Hobart Mus. ! (Miss Lodder). 



*M. PURA, Deshayes, 1853; Reeve, Conch. Icon., f. 53. 

 N. Coast, uncommon, W. L. May; (Census). 



*M. rufescens, Lamarck, 1818; Reeve, Conch. Icon., f. 9. 

 Common (Census). 



Subgenus Mactrella (Gray), Dall, 1894. 

 *M. ovalina, Lamarck, 1818; Delessert, Recueil, t. 3, f. 7, 1841; 

 M, depressa^ Reeve, Mon. Mactra, f. 76. 

 Frederick Henry Bay, plentiful, W. L. May; Flinders Island, 

 Aug. Simson !. 



