342 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Feb. 27, 



the geographical Umits of the Dinornis and Palapteryx, as to produce 

 conditions that tended to diminish their numbers, preparatory to their 

 final annihilation. 



Of the law which determines the extinction of races of highly or- 

 ganized beingSj and whose effects through countless ages Palaeonto- 

 logy has in part revealed, w^e are as utterly ignorant as of that which 

 governs the first appearance of the minutest hving animalcule which 

 the most powerful microscope enables us to descry : — both are veiled 

 in inscrutable mystery, — the results only are within the scope of our 

 finite comprehension. 



I have thus endeavoured to present a general idea of the facts and 

 inferences suggested by the collection of minerals and fossils, and the 

 notes and sketches, communicated by my eldest son, in the hope that 

 his attempts to illustrate the Palaeontology of his adopted country, will 

 be received by the Geological Society as an earnest of his anxious 

 desire to advance, in however humble a degree, our knowledge of the 

 ancient physical history of the earth and its inhabitants. 



From the 



Ototara 



limestone. 



From the 

 blue clay of 

 Onekakara. 



EXPLANATION OF THE PLATES. 



PLATE XXVIIL 



Fig. L Tooth oi Lamna, nat. size 



Figs. 2, 3. Terebratula Gualteri, n. sp., nat. size 



Fig. 4. Cereopora Ototara, n. sp., magn 



Fig. 5. Cereopora Ototara, magn. 2 diam 



Fig. 6. Cereopora Ototara, transverse section of the stem, nat. size 

 Fig. 7. Cereopora Ototara, transverse section of the stem, magn. .. 

 Fig. 8. Portion oiEscJiara, incrusting the upper part of fig. 4, magn. 



Figs. 9-n. Cereopora, nat. size 



Figs. 12, 13. Manon, nat. size 



Fig. 14. Manon, magn 



Fig. 15. Dentalium, nat. size 



Figs. 16, 17. Turritella rosea, nat. size 



Figs. 18, 19. Turbinolice? nat. size 



Fig. 20. Pustulopora Zealandica, n. sp., nat. size 



Fig. 21. Pustulopora Zealandica, magn. 3 diam , 



PLATE XXIX. 



[In this plate the objects are figured as seen by transmitted light, under magni- 

 fying powers of from 200 to 300 diameters.] 



Fig. 1. Textularia 



Fig 2. T. elongata, n. sp 



Fig. 3. T. aciculata 



Figs. 4, 5. Stauroneis Zealandica, n. sp 



Fig. 5. Stauroneis Zealandica, the central bar, detached from the 



shield •••• 



Figs. 6, 7. Surrirella 



Fig. 8. Pinnularia 



Fig. 9. Actinocyclus 



Fig. 10. Pyxidicula 



Fig. 11. Polycystina 



Fig. 1 2, Spicule of Gorgonia From the Ototara limestone 



From the 



Ototara 



limestone. 



From the 



infusorial 



marl of New 



Plymouth. 



