PLATE LVII. 



Lagena. 



(«, Lateral aspect; b, oral aspect.) 



Diam. Page 



Figures 1-4. — Lagena hispida, Reuss, . . . x 60 459 



,, 5. — Lagena ampulla-distoma, Rymer Jones, . x 60 458 



,, 6 (?) 7-12. — Lagena aspera, Reuss, .... 457 



Figs. 6, 7. x 75 ; figs. 8, 9, . . . x 60 



Figs. 10, 11, . . . . .x 45 



Fig. 12. Compressed ecto-ento-solenian specimen, . x 60 



,, 13. — Lagena lineata, Williamson, sp\, . . x 60 461 



,, 14, 16, 17, (and 18?). — Lagena semistriata, Williamson, . x 75 465 



„ 15, 21. — Lagena crenata, Parker and Jones, . x 75 467 



,, 20. — Intermediate form, resembling Lagena crenata 



and Lagena semistriata, . . x 75 465 



„ 19, 22, 24, 28, 29, 30. — Lagena striata, d'Orbigny, sp., . x 60 460 



,, 23, 26, 33, 34. — Lagena sulcata, Walker and Jacob, . x 60 462 



,, 25, 27. — Lagena sulcata, var. interrupta, Williamson, . x 60 463 



,, 31, 32. — Lagena acuticosta, Reuss, . . . x 60-75 464 



,, 35, 36. — Lagena stelligera, Brady, . . x 75 466 



