PLATE LXVII. 



Rhabdooonium. — Vaginulina. — Ceistellaria. 



Diam. Page 



Figures 1-3. — Rhabdogonium tricarinatum, d'Orbigny, sp., . x 75 525 



b, b, Oral aspects. 



„ 4-6. — Rhabdogonium minutum, Reuss, . . x 75 526 



b, Oral aspect. 



,, 7. — Cristellaria schloenbachi, Reuss, . . x 25 539 



b, Oral aspect 



,, 8. — Anomalous specimen, probably of the same species, > 



,, 9. — -Cristellaria italica, var. volpicellii, Costa, . > 



,, 10-12.— Vaginulina linearis, Montagu, sp., . . > 



b, Oral aspect. 



., 13,14. — Vaginulina spinigera, Brady, . . . > 



,, 15,16. — Vaginulina patens, n. sp., > 



Figs. 15, 16</. Lateral aspects ; b, front peripheral aspect. 



,, 17, 19, 20. — Cristellaria crepidula, Fichtel and Moll, sp., . . 542 



Fig. 17. a, Lateral aspect ; b, oral aspect, . x GO 



Figs. 19, 20 a. Lateral aspect; b, front peripheral aspect, x 50 



,, 18. — Cristellaria lata, Cornuel, sp., . . . x 25 539 



a, Lateral aspect ; b, front peripheral aspect. 



