

BY CAPTAIN F. W. HUTTON, F.G.S. 257 



Cardita australis. Lamarck, Anim. sans Yert. 2nd edition, 

 VI., p. 383 ; Quoy and Gaimard, Voy. Astrolabe, Zool. 

 III., p. 480, pi. 78, figs. 11-14 (1835); Gray, Figures of 

 Molluscous Animals, pi. 346, fig, 4. C. Zealandica, Potiez 

 and Michaud, Gall, des Moll., 1838, p. 166. C. tridentata, 

 Reeve, Conch. Icon. fig.-22 (1843) [not of Say]. C. purpurata, 

 Deshayes, Pro. Zool. Soc, 1852, p. 100, pi. 17, figs. 12-13. 

 Habitat. — Throughout New Zealand, and at the Chatham 



Islands. 



The interior is generally marked with rosy or purple, and the 



ribs are broader than the interstices. 



Cardita difficilis. Deshayes, Proc. Zool. Soc, 1852, p. 103, 

 pi. 17, figs. 16-17. 



Habitat. — Stewart's Island. 



The interior is white, and the interstices are sub-equal to the 

 rib?. Perhaps a variety of the last species. 



Cardita compressa. Reeve, Conch. Icon. fig. 46 (1843) ; C. 

 zealandica, Deshayes, Proc. Zool. Soc, 1852, p. 101, [not of 

 Potiez and Michaud] ; C. lutea, Hutton, Man. of New Zea- 

 land Mollusca, p. 159 (1880). 

 Habitat. — Auckland. 



Cardita tasmanica. Tenison-Woods (Mytilicardia) Proc. Roy. 



Soc. of Tasmania, 1875, p. 161 ; Mytilicardia excavata, 



Hutton, Man. New Zealeand Mollusca, p. 160 (1880) [not of 



Deshayes J. 



Habitat. — Throughout New Zealand and at the Chatham 



Islands. Found also in Tasmania. 



Family. Arcid.e.* 



* The following species have been omitted, but possibly some of them 

 may yet be obtained by dredging. 

 Nucula castanea. Adams. 

 Nucida striolata. Adams, inhabits China. 

 Nucula grayi. D'Orbigny, inhabits S. America. 

 Li dafaatkliosa. A dams. 

 Leda micans. Adams. 



