108 Proceedings of the Royal Society of Victoria. 



1884. Mactra ovalina, Weinkauff. Conch. Cab., Mactra, 



pp. 69, 70, No. 70, pi. 25, f. 1, \a. 



1885. Mactra (Mactrinula) depressa, E. A. Smith. Chall. 



Zool., vol. xiii., Lam., p. 57. 

 1897. Hemimactra ovalina, Tate. T.R.S. S.A., vol. xxi., 



pt. 1, p. 46. 

 1901. Mactra (Mactrella) ovalina,Tate and May. P.L.S. 

 N.S.W., vol. xxvi., pt. 3, p. 423. 

 Hab. — Hobson's Bay and Port Phillip ; Western Port. 

 Obs. — Our shell agrees with Lamarck's description, but not so 

 satisfactorily with Delessert's figure. Tate says that Mactra 

 depressa, Reeve, is admitted as a synonym of M. ovalina by the 

 British Museum. Reeve's figure is distinctly our shell, but his 

 name could not possibly stand even if the shell were distinct 

 from M. ovalina as M. depressa was preoccupied by Lamarck. 



Note. — We have, in addition to the above 6 species, one other 

 unidentified form, which appears so far as present investigations 

 have gone to represent a new species. 



Genus Spisula, Gray, 1838. 



Spisula parva. Petit. 



1853. Gnathodon parvum. Petit. Jour, de Conch., vol. 



iv., p. 358, pi. 13, f. 9, 10. 



1854. Mactra rostrata, Reeve (non Spengler, Philippi, 



etc.). Conch. Icon., vol. viii., pi. 19, f. 104. 

 1854. Mactra corbuloides, Deshayes. P.Z.S. Lond., p. 



63. 

 1854. Mactra corbuloides. Reeve. Conch. Icon., vol. viii., 



pi. 19, f. 103. 

 1867. Spisula cretacea, Angas. P.Z.S. Lond., p. 909, pi. 



44, f. 6. 

 1867. Spisula producta, Angas. Id., pi. 44, f. 7. 

 1871. Mactra fluviatilis, Angas. Id., p. 20, pi. 1, f. 31. 

 1873. Gnathodon parvus, Sowerby. In Reeve Conch. 



Icon., vol. xix., pi. 1, f. 6. 

 1890. Mactra cretacea, Whitelegge. Jour. Roy. Soc. 



N.S.W., vol. xxiii., p. 236, No. 40 (p. 74 in 



list). 



