PLATE LVI. 



Lagena. 



(a, Lateral aspect ; b, oral aspect.) 



Figures 1-3. — Lagena globosa, Montagu, sp., 



,, 4. — Lagena apiculata, Reuss, sp., 



,, 5. — Lagena ovum, Ehrenberg, sp., 



,, G. — Lagena botelliformis, Brady, 



,, 7-14. — Lagena kevis, Montagu, sp., 



„ 15-18. — Lagena apiculata, Reuss, sp., 



,, 19-28. — Lagena gracillima, Seguenza, sp., 



., 29. — Lagena elongata, Ehrenberg, sp., 



,, 30. — Lagena Icevis, Montagu, sp. (var.), 



,, 31, 32. — Lagena truncata, n. sp., 



,, 33-36. — Lagena longispina, Brady, globular form. 



Figs. 33-35. x 75 ; — fig. 36, 



Diam. Page 



x 60-75 452 



x 75 



x 75 



453 



454 



x 50 



