366 THE MEDALS OF CREATION. Cuap. X. 
in thickness, consist of a pure white Fusulina limestone ; — 
the foraminifera are all of one species, the Pusulina cylin- — 
drica. 
FoRAMINIFEROUS LIMESTONE OF NEw ZEALAND.—“ On the 
eastern coast of the Middle Island of New Zealand, to the — 
north of Otago, strata of yellow and fawn-coloured limestone 4 
appear on the surface at Ototara, and continue to Kakaunui. 
This rock is generally friable and porous ; it contains tere- 
bratulz, spines and cases of echinoderms, pseudo-belemnites, — 
teeth of sharks, &c. A microscopical examination shows it — 
to be in a great part composed of an aggregation of very 
small polythalamia.” * The specimens of the Ototara lime- 
stone received from my son, are very rich in minute corals 
and shells, and foraminifera of the European cretaceous 
type: species of Rotalia, Cristellaria, Globigerina, Textu- 
laria, Rosalina, Nodosaria, Dentalina, &c. Among them are 
two forms which occur at Charing; namely, Rosalina Lor- — 
neiana, Lign. 109, fig. 5, and Textularia elongata: of the 
latter a specimen in flint is figured, Lign. 119, fig. 3. The 
soft parts of Rotalise are preserved in the Ototara limestone, 
as in our chalk. 
There are likewise, as at Charing, cases of Entomostracze 
of the genera Basidia and Cythereis. 
The assemblage of fossil remains in the Ototara rock has 
decidedly a cretaceous aspect, but till the geological position 
of the strata in relation to the other formations of the Island 
is determined, it would be premature to regard these lime- 
stones as the equivalents in time of the Chalk formations of 
Europe. 
TERTIARY FORAMINIFERA.—The marine tertiary deposits 
re Ot ie 
* Notes on the Geological Structure of the Middle Island of New 
Zealand, by Walter Mantell, Esq. of Wellington. 1848. 
+ See Geol. Journal, vol. vi. p. 339. pl. xxix. 
+ A list of the Ototaran fossils collected by Mr. Walter Mantell, is 
given in Geol. Journal, vol. vi. p. 329. 
