1850.] MANTELL ON THE GEOLOGY OF NEW ZEALAND. 329 



these animalcules are preserved in many instances, as in our creta- 

 ceous deposits. But I do not think that the facts are sufficient to 

 warrant a decision, as to whether the strata in question should be 

 considered as secondary or tertiary, for there are many eocene beds 

 in which the organic characters are very similar : however this may 

 be, these deposits are the most ancient unaltered sedimentary in the 

 country under survey, of which specimens have been transmitted to 

 England. A list of the fossils collected is subjoined. 



I would here express in the warmest manner my obligations to Mr. 

 Morris, for his kindness iti determining the characters of many of 

 the organic remains given in the following pages ; and to Mr. Lovell 

 Reeve, for the comparison of the shells with recent species ; and to 

 Mr. Williamson, and especially to Mr. Rupert Jones, for assisting me 

 in the determination of the Foraminifera and Diatomaceae. In the 

 attempt to name with precision the organisms imbedded in the strata 

 of our Antipodes, I gladly availed myself of the knowledge of those 

 scientific friends who were most conversant with the respective sub- 

 jects, and I now gratefully acknowledge the Hberality and kindness 

 with which at all times they afforded me their valuable aid. 



Fossils from the Ototara Limestone. 



Scales of fishes. (No specimens were sent to me.) 



Teeth of a species of Shark, Lamna : Pl. XXVIII. fig. 1. 



Belemnite ? Fragments of a solid, subcylindrical, calcareous body, 

 with a fibro-radiating^ structure, closely resembling that of the 

 guard of the Belemnite : it is very like a fossil from the cretaceous 

 beds of Pondicherry in India, described by Prof. E. Forbes as Be- 

 lemnites 1 fihula * . 



Terebratula. Fragments of a large smooth species. 



. Gualteri, nov. spec. : Pl. XXVIII. figs. 2, 3. "Shell somewhat 



trigonal, smooth, both valves nearly equal and rather depressed ; 

 lateral margins sinuous ; rostral valve with an acute and slightly 

 recurved beak, the perforation below it. The anterior margin with 

 a broad sinus, producing a corresponding arched elevation in the 

 smaller valve. 



*' This shell bears a remarkable resemblance to the Terehratula 

 suhplicata (of Dr. Mantell, Fossils of the South Downs, pl. 26. 

 fig. 5), but may be readily distinguished by a careful comparison 

 of the two species : in this shell there are no plicae. I have 

 named it Gualteri in honour of the discoverer, Walter Mantell, 

 Esq." — Mr. Morris. 



Pollicipes. Resembling a cretaceous species. 



Cidaris. Fragments of plates and numerous spines. 



Eschara. Pl. XXVIII. fig. 8. Investing Cereoporce. 



Cereopora Ototara, nov. spec. : Pl. XXVIII. figs. 4-7. This coral 

 more closely resembles the C. disticha of Goldfuss, than any other 

 known species. The cells, however, are more distinct and less re- 

 gular. I propose to distinguish it by the name of the locahty in 

 which it was first noticed. 



^ Transactions of the Geological Society, 2nd Series, vol. vii. p. 119. pl. 9. fig. 3. 



