1850.] MANTELL ON THE GEOLOGY OF NEW ZEALAND. 331 



cyclus) . There are many sponge spicula traversed by a central tube, 

 and other spines, apparently oiAlcyonia or Gorgonice. The clay con- 

 tains also fragments of a delicate branched body, having linear rows 

 of regularly disposed openings. I have not observed any traces of 

 Foraminifera, though my son mentions having found Spirolinites. 



Bone of Bird: in a septarium {ante, p. 325). 



Corals.— ^5cA«m : Pl. XXVIII. fig. 8. 



Pustulopora Zealandica, nov. spec. : Pl. XXVIII. figs. 20, 21. It 

 is a beautiful species, alhed to Cereopora madrej^oracea of Gold- 

 fuss. 



Turbinolia : Pl. XXVIII. figs. 18, 19. There are two lamelliferous 

 corals, apparently of this genus. One is of an inverted conical 

 shape, fig. 1 9 «, the other has a broad, nearly flat, callous base, as 

 shown in fig. 18. 



MoLLUscA. — The shells are for the most part in a beautiful state 

 of preservation, differing but little from dead recent specimens, except 

 in being destitute of colour. With the assistance of Mr. J. E. Gray, 

 Mr. Lovell Reeve, and Mr. Morris, the following genera and species 

 have been determined : — 



Turritella rosea, Quoy : Pl. XXVIII. figs. 16, 17. 



Struthiolaria straminea, Sowerby. This genus is peculiar to New 

 Zealand. 



Triton Spengleri, Lamarck. 



Fusus australis, Quoy. "Near to F. sulcatus.^^ — Mr. L. Reeve. 



nodosus, Martyn, sp. 



Fyrula. Natica. 



Ancillaria australis, Sowerby. "This fine species is very like one 

 described by Mr. Hinds in the * MoUusca of the Voyage of the 

 Sulphur.' Among fossil shells it comes nearest to A. glandiformis, 

 from Bordeaux, but is certainly distinct from it. Being found in 

 the same semi-fossil state with Struthiolaria and Triton Spengleri, 

 it probably exists on the neighbouring coasts *." — Mr. Lovell 

 Reeve. 



Calyptrcea. 



Bentalium ; an undescribed, finely striated species : Pl. XXVIII. 

 fig. 15. 



Cardium. Nucula. Limopsis. Pectunculus, resembling the com- 

 mon Bognor species. 



Area. Pecten. Ostrea. 



Mytilus. A beautiful striated recent species. 



Vegetable remains. — Fossil wood of the Araucarian type, in which 

 the internal structure is exquisitely preserved, and a fragment of a 

 silicified monocotyledonous stem, are the only examples transmitted 

 to me from these deposits. 



* In a note on the Fossil Shells of New Zealand in Dr. Dieifenbach's work, 

 vol. ii. p. 296, Mr. J. E. Gray mentions " an Ancillaria with a very callous apex," 

 which is probably the same species. 



