Hurron—7ke Phocene Mollusca of New Zealand. 85 
VENERICARDIA AUSTRALIS, Lamarck ; Quoy and Gaimard, Voy. Astrolabe, Zool. IIT. 
p. 480, pl. yxxvur. figs. 11-14 ; Cardrta tridentata, Reeve, Conch. Icon. fig. 22. 
Localtty.—Wanganui, Petane, Matapiro. 
VENERICARDIA DIFFICILIS, Deshayes, Pro. Zool. Soc. 1852, p. 103, pl. xvu. figs. 16, 17. 
Locality.—Wanganui, Petane, Matapiro. 
VENERICARDIA PATAGONICA, Sowerby in Darwin’s Geol. Obs. in 8S. America, p. 251, 
pl. u. fig. 17. 
Locality. —Petane, Matapiro. 
Genus MYTILICARDIA. 
Myrinicarpia Tasmanica, Tenison-Woods, Pro. Roy. Soc. Tas. 1875, p. 161. 
Locality. —W anganui. 
Myriicarpia rriconorsis, Hutton, Trans. N.Z. Inst. Vol. XVIT. p. 324. 
(Plate rx. fig. 94.) 
Shell small, higher than long, strongly radiately ribbed. Ribs ten, nodular, 
the interstices strongly concentrically striated, anterior margin straight, long ; 
posterior dorsal margin short, straight, then suddenly bent down ; ventral margin 
regularly curved. Length 3mm. ; height 4mm. 
Locality.—Wanganui, Petane. 
Genus NUCULA. 
Nucuna nirwuia, Adams, Pro. Zool. Soc. 1856, p. 51; Reeve, Conch. Icon. fig. 27. 
Locality.— Wanganui, Petane. 
Genus LEDA. 
Key to the species. 
Length nearly three times the height ... Se 39 L. cOncinna: 
Length less than twice the height wk: 324 . L. fastidvosa. 
