210 



CAPT. P. W. HTJTTON ON THE 



Fig. 4. — Section from near Hoiuick, Auchland, to 

 (Distance 8 miles.) 



w. 



Howiek. 



Turanga. 



Wairoa River. 



Wairoa Eiver. 



d. Maitai System. g. Oamarii System 



. Pareora System. 



The humerus of a Porpoise (PJioccenopsis Mantelli, Huxley *) was 

 found by Mr. Mantell at Awamoa, near Oamaru. He also found a 

 fragment of a bird's bone, 1^ inch in diameter, in a septariura 

 from Hampden ( = Onekakara) t, and this, from its size, must have 

 belonged to a Moa. Teeth of the huge Miocene shark, Oarcharodon 

 megcdodon, Owen, have been found near East Cape. But the 

 system is chiefly characterized by its numerous s-pecies oi StrutJiiolaria. 

 The other interesting Mollusca are Polytropa, Siplionalia, Cominella, 

 Turhinella, Ancillaria, Conus, Sigaretus, Xenopliora, Rotella, Mono- 

 donta, Crassatella, Perna, Trigonia^ Limopsis, and Solenella. Large 

 species of CucuUaa, Cardium spatiosum, and Turbo superhus suggest 

 a sea warmer than at present ; but with these lived several species 

 which are now found as far south as Foveaux Straits, — e.g. Voluta 

 pacifica, Triton Spengleri, Venus StutcJiburyi, and Pectunculus lati- 

 costatus. Prom 20 to 45 per cent, of the species of Mollusca and 

 Brachiopoda are recent. Possil plants of the system are numerous 

 near Tapanui in Otago. Dr. Zittel has described several Mollusca 

 from Cape Eodney, JSTapier, cliffs near Nelson, and the Awatere 

 Valley. Dr. Stoliczka has described the Bryozoa, and F. Karrer 

 the Foraminifera from Orakei Bay. 



The following may be considered as characteristic : — 



Cardium spatiosum, Button. 

 Crassatella ampla, Zittel. 

 Limopsis insolita, Sow. 

 Pecten secta, Hutton. 



Triphooki, Zittel. 



accrementa, Hutton. 



Ostrea ingens, Zittel. 



Flabellum corbicula, Ten.- Woods. 



Platyhelia distans, Ten.- Woods. 



Cominella Eobinsoni (Zittel). 

 Voluta corrugata, Hutton. 

 Pleurotoma sulcata, Hutton. 

 Conus Trailli, Hutton. 

 Natica solida, Sow. 

 Struthiolaria cincta, Hutton. 



tuberculata, Hutton. 



Dentalium Mantelli, Zittel. 



Iffive, Hutton. 



• solidum, Hutton. 



Pectunculus glohosus, Hutton, and Ostrea nelsoniana, Zittel, may 

 also be considered as characteristic, but they occur as well in the 

 Oamaru System. Indeed these two systems are closely connected 

 palseontologically, and the following highly characteristic species 

 occur equally in both, but do not occur outside, these systems : — 



-"- Quart- Journ. Geol. Soc. xv. p. 670 ; and Ann. Nat. Hist. ser. 3, vol. iii, 

 p. 509. 



t Quart. Journ. Geol. Soc. vi. p. 326. 



