396 Transactions. — Geology. 



Fig. 15. PuUenia spJmroides. D'Orb. 



Also belonging to the family Globigerinida. I have two small specimens 

 coming near to PuUenia spJmroides, D'Orb. It is very rare here, equally 

 rare in miocene, Yarra Yarra, Victoria. Kecent. Very rare in North Atlantic. 

 Kather common on the Norwegian coast ; 20-200 fathoms. 



DESCRIPTION OF PLATE. 



1-2. Biloculina ringens, Lamarck. 

 3-4. ,, elongata, D'Orb. 



5-7. Quinqueloculina triangularis, D'Orb. 



8. Spiroloculina planulata, Lamarck. 



9. Cristellaria crepidula, F. et M. 



10. Texularia agglutinans, D'Orb. 



11. Bigenerina nodosaria, D'Orb. 



12. Eotalia craticulata, P. et J. 



13. Truncatulina lobatula, W. et J. 



14. Nonionina umbilicatula, Montague. 



15. PuUenia sphasroides, D'Orb. 



16. Carbonia ? 



Art. LVII. — On the Genus Ehynchonella. By Alex. McKay. 

 [Read before the Wellington Philosophical Society, 10th October, 1880.] 



It is by the permission of the Director of the Geological Survey that I have 

 the pleasure of placing this paper before the Society. 



Of the moUusca PJiynchonella, although it is represented by but two 

 living species, is, if the fossil species be taken into consideration, numeri- 

 cally the most important genus belonging to the Brachiopoda. 



In Woodward's " Manual of the Mollusca," the genus is said to include 

 332 fossil species ; some 60 species obtained in New Zealand have to be 

 added, thus bringing the total to something like 400 species. 



At the present time Pi. nigricans alone survives in the southern seas, and 

 is found on the New Zealand coast. 



This species is the only one found in our upper and middle tertiary 

 strata. In the upper Eocene rocks of New Zealand, represented by the 

 Mount Brown and Hutchinson quarry beds, another form appears, but this 

 with its close ally E. nigricans is the only species yet known from our ter- 

 tiary strata. 



From our upper secondary rocks two more species are added to the list, 

 Rhynchonella Squamosa, Hutton, and a species not yet described, which is 

 found in cretaceous rocks of the East Coast of Auckland. 



