300 rORAMINIFERA OF THE KERIMBA ABCHIPELAGO, 



PLATE XXXVII. 



Noiiria p o lym orpli inoides. 



Figs. 1, 2, 4, 6, 7, 9, 10, 11. Specimens from Kerimba, showing diversity of size and 

 form. Fig. 9 is a bilocular form, isomorphous as regards arrangement of 

 chambers with Polymorphina ohlonga Will. 



3, 5. Specimens laid open to show the imperfectly septate cavity. 



8. Oral view of a specimen showing the porous aperture filled in with fine sand- 

 grains. 



11. A specimen mounted in balsam and viewed as a transparent object. Showing 



the internal septation and method of construction of the test. 



12. Specimen from " Poor Knights' Islands," Hauraki Gulf, New Zealand. The 



test is entirely constructed of obsidian flakes, and is much neater and more 

 compressed than the Kerimba specimens. 

 13,14,15. Specimens from "Poor Knights' Islands," viewed as transparent 

 objects in balsam. Fig. 13 shows a few sponge-spicules incorporated in 

 the test. Fig. 15 is a bilocular specimen [cf. fig. 9 also), the protoplasm 

 is confined to the earlier chamber. 



Nouria harrisii. 

 16-19. Specimens in different stages of growth. 



20. Specimen viewed as a transparent object in balsam. The specimen is 

 bilocular, and the protoplasm is confined to the first chamber. 



Nouria compressa. 

 21-25. Specimens in different stages of growth. Fig. 21 is a young or bilocular 



form. The dark grains are glauconitic particles built into the test. 

 26. A fragment to show details of construction. 



