PLATE XXV. 



PlLULINA. — TECHNITELLA. — SlORTHOSPHiERA. — PeLOSTNA. 



Figures 1-6. — Pilulina jeffreysii, Carpenter, 



Fig. 1 . a, Lateral aspect ; figs. 1 h, 2, oral aspect, 

 Fig. 3. Test laid open to show the thickness of the 

 walls, and the smoothly finished internal cavity, 

 Fig. 4. A portion of the external surface, 

 Fig. 5. Transverse section of the test, 

 Fig. 6. Longitudinal section of the test, 



„ 7. — Technitella melo, Norman. . . x 50 246 



a, Lateral aspect ; h, oral aspect. 



„ 8-12. — Technitella legwnen, Norman, .... 24G 



Fig. 8. Lateral aspect, small specimen, 

 Fig 9. Broken specimen, with collar-like aperture, 

 Fig. 10. Lateral aspect, 



Fig. 11. Specimen with an incrustation of sand pro- 

 tecting the spicular test, 

 Fig. 12. Surface of the spicular test more highly mag- 

 nified, 



,, 13, 14. — Technitella raphanus, n. sp., . . • x 25 247 



Fig. 13. Large specimen somewhat imperfect at the 



oral end. 

 Fig. 14. Oral end of a smaller test. 



15-17. — Storthosphcera albida, Schulze, . . x 20 241 



Figs. 15, 16. General aspect of the test. 

 Fig. 17. Specimen laid open to show the thickness of 

 the wall, and the internal cavity. 



., 18-20. — Pelosina rotundala, Brady, . . x 20 23G 



Figs. 18, 19. General aspect of the test. 



Fig. 20. Specimen laid open transversely to show the 



thickness of the wall, and the comparatively 



small internal cavity, 



