424 CENSUS OF THE MARINE MOLLUSCA OF TASMANIA, 



Genu» S p I s u L A, Gray, 1838. 



*S. CRETACEA, Aiigas, P.Z.S., 1867, t. 44, £. 16. 



Tamar Heads (Census); Derwent Estuary, TV. L. May. 



Genus L u t r a r i a, Lamarck, 1799. 



*L. RHYNCH^NA, Reeve, Conch. Icon., f. 10. 



Bird River to Waterhouse Island; and Circular Head, W. F. 



Fetterd !; N.E. Coast (Census). 



Family MESODESMATID.^. 

 Genus Anapella, Dall, 1895. 

 [ = Anapa, Gray, 1853, iion 1847]. 



"^'A. cuneata, Lamarck (Crassatella), 1818. 

 Mesodesma cuneata, Reeve, Conch. Icon., f. 7. 

 A. triquetra, Hanley. 



A. Tasma7iica, T. Woods, P.R.S.Tasm., 1877, is a micromorph. 

 A. Smithii, Gray. 



Types of triquetra and Tasmanica; rare in Tasmania (Census); 

 Ralph's Bay and Frederick Henry Bay, W. L. May. 



Genus Mesodesma, Deshayes, 1830. 



*M. ERYCiNiEA, Lamarck (Crassatella), 1818; Delessert, Recueil, 



t. 4, f. 4; Reeve, Mon. Mesodesma, f. 12. 

 M. Diemenensis, Q. & G., Voy. Astrolabe, iii., 1835, p. 507, 



t. 82, f. 12-14. 

 Type of M. Diemenensis; common (Census). 



Subgenus Donacilla, Philippi, 1836. 



*'M. elongata, Deshayes, P.Z.S., 1854, p. 337 ; Reeve, Mon. 

 Mesodesma, f. 5. 

 Very common (Census). 



*M.glabrella, Lamarck (Amphidesma) \, An. s. Vert., p. 493, 1818. 

 M. pr^cisa, Deshayes !, P.Z.S., 1854; Reeve, Conch. Icon., 



f. 31. 

 M. ohtusa, Crosse & Fischer !, Journ. de Conch., 1864, p. 350. 

 Type of M. prcecisa; very common (Census). 



