18 



LAMELLIBHANCHIATA, 



SAXICAVA. 



5. S. arctica, Linnceus ; Cat. Marine Moll., p. 60. 

 Localities. — WaDganui (u) ; Awamoa. 



Family — Coebulid^. 

 CORBULA. 



6. C. zealandica, Quoy ; Cat. Mao^ine Moll., p. 61. 

 Localities. — Chatham Islands. 



7. C. macilenta, sp. nov. Oblong, compressed, thin ; anterior 

 end rounded, posterior produced, keeled, rather hollowed above, and 

 sharply truncated ; strongly concentrically but rather irregularly 

 striated. Height, '3 ; length, "5 ; thickness, "2. 



Localities. — "Wangauui (u) ; Shakespeare ClilF. 



8. C. dubia, sp. nov. Ovato-trigonal, sub-equilateral, gibbous ; 

 rounded in front and rather flattened behind ; distantly concentrically 

 striated. Height, '8 ; length 1. 



Localities. — Motanau (l) ; New Eiver, Q-rey District j Awamoa ; 

 Awatere ; Mount Cookson. 



Family — Anatinid m . 

 NE^RA. 



9. N. kirki, sp. nov. Sub-orbicular, inflated, smooth ; anterior 

 dorsal margin straight, running out into a long narrow beak. Height, 

 "4 ; length, 'G. 



Localities. — Whangape Lake, "Waikato. 



MYODORA. 



10. M. striata, Qitoi/ ; Cat. Marine Moll., p. 62. 

 Localities. — W anganui (u) . 



Family — Macteid^. 

 MACTRA. 



11. M. diSCOrS, Gra?/ ; Cat. Marine Moll., p. 63. 



Localities. — Wanganui (u) ; Paparoa, "Wanganui Eiver ; Cape 

 Kidnappers. 



12. M. Sequilatera, Beeve; Cat. Marine Moll, p. 63. 

 Localities. — Wanganui (u). 



13. M. inflata, sp. nov. Oval, anterior side shorter, rounded, 

 its dorsal margin rather concave ; posterior side rounded, its dorsal 

 margin convex ; umbones rather inflated, incurved ; smooth or lightly 

 concentrically striated. Height, 2 '3; length, 3. 



Localities. — Waipara Gorge; Awatere; Motanau (l). 



14. M. attenuata, sp. nov. Oblong, attenuated in front, front 

 dorsal margin slightly concave ; umbones incurved ; concentrically 



