2fiO 



G. 9561, G. 9613, G. 9615, G. 9616. Many specimens asso- 

 ciated with Dentalium, Axintsa, etc., in blocks of argillaceous 

 shelly limestone ; from the Mangapakeha beds, Akuakua, Auckland. 



Sir James Hector Coll. 



G. 9702. Series illustrating stages of growth, showing that 

 the umbilicus was largely covered in with callus even at aa early 

 age ; from Parimoa. TF. B. J). Mantell Coll. 



Subgenus LUNATIA, Gray. 

 [Proc. Zool. Soc. 1847, p. 149.] 

 Natieina, auctorum, non Guilding, 1834, nee Gray, 1842. 



Shell more or less globose ; umbilicus open, without funiculus. 



The type of Naticina, Guilding, as specified by that author,' 

 is i\^. lactea, Guilding, and as this species falls within the earlier 

 Polinices, Montfort, Naticina, Guilding, is synonymous with 

 Polinices (Mamma), as pointed out by American authors.'' 

 JV. catena, Da Costa, regarded by some authors' as the type of 

 Naticina, does not fall within that subgenus. The Naticina of 

 Gray refers to naticiform Sigareti, and is in no sense applicable to 

 the moUusca falling under Naticina, as defined by Guilding. The 

 majority of the fossil species usually included under Naticina 

 may be referred to Limatia when that term is liberally interpreted. 



Type. — Natica ampullaria, Lamarck. 



Natica (Lunatia) substolida, Tate. 



1893. Natica [Neverita) substolida, Tate, Trans. Eoy. Soc. South Aust. 

 vol. xvii. pt. 2, p. 323, pi. vi. fig. 3. 



This species is closely allied to N. abducta, Deshayes, of the 

 Lower Eocene of North-Western Europe, from which it differs, 

 principally, in not having such a wide umbilicus, and in being 



' Traus. Linn. Soc. vol. xvii. 1834, p. 31. 



« E.ff. Dall, Trans. Wagner Free Inst. Sci. Pliilad. vol. iii, pt. 2, 1892, p. 367 

 Tryon, Manual of Concliology, vol. viii. 1886, pp. 49, 89. 



» Cossmann, Ann. Soc. Eoy. Make. Belg. t. xxiii. 1888, p. 164. 



