SIPHONALIA. 157 



Siphonalia mandarina, Duclos (sp.). 



1831. FiisKs niandariniis, Duclos, Mag. Zool. classe v. pi. -siii. 



1832. Fusiis zealandicus, Quoy and Gaimard, Voy. de I'Astrolabe, Zool. 



t. ii. p. 500, pi. xxxiv. figs. 4, 5. 



1873. Fusiis mandarinus. Von Martens, List Moll. N.Z. p. 18. 



1873. Fhsus zealandicus, Hutton, Cat. Marine Moll. N.Z. p. 8. 



1873. Fiisus mandarinus, Hutton, id. p. 8. 



1873. Fusus zealandicus, Hutton, Cat. Tert. Moll. N.Z. p. 2. 



1873. Fusus mandarinus, Hutton, id. p. 3. 



1880. Neptuncea zealandica, Hutton, Man. N.Z. Moll. p. 50. 



1880. Neptunea [Austrofusus] mandarinus, Kobelt, Conch. Cab. (ed. Kiister), 



p. 137, pi. xliv. figs. 2, 3. 



1881. Siphonalia [Austrofiisus) mandarina, Tryon, Manual of Concholog)-, 



vol. iii. p. 138, pi. Ivi. fig. 384 ; pi. Ivii. fig. 385. 

 1886. Fusus [Neptunea) mandarinus, Watson, Voy. " Challenger," Zool. 



vol. XV. (Gasteropoda), p. 200. 

 1893. Siphonalia mandarina, Hutton, Linn. Soc. N.S.W., Macleay Mem, 



Vol. p. 41. 



The young of this species somewhat resembles S. longirostris, 

 though the sculpturing on the whorls of the latter species is 

 more rugose, and the dentate tubercles on the periphery are much 

 more pronounced. The protoconch of S. mandarina is relatively 

 larger, and it is turbinate. The costate and tuberculate ornament 

 is lost with advancing age, and adult specimens possess bolder 

 spiral ridges. The inner margin, smooth in the young, becomes 

 covered with a detached plate in the adult and senile stages. 



Fusus zealandicus, Quoy and Gaimard, is inseparable from the 

 present species, as is now generally recognized. 



Dimensions. — Length 114 mm.; breadth 54 mm.; length of 

 aperture and canal 70 mm. 



Form, and Loc. — Pliocene : I^ew Zealand. 



G. 9556. Specimen of the gerontic stage, in which the detached 

 plate on the inner margin is granose ; from Wanganui (?). 



Sir James Sector Coll. 



G. 9597. An example of the neanic stage, with long anterior 

 canal ; from Onekakara. Sir James Hector Coll. 



6. 9609. Having protoconch in good preservation ; from 

 Waugauui (?). Sir James Hector Coll. 



