PLATE VIII. 



Plankspirina. — Miliolina. — Spiroloculina. 



Diam. Page 



Figures 1-4. — Planispirina celata, Costa, sp., . . x 50 197 



Figs. 1, 2. a, a, Lateral aspect; b, b, oral aspect. 

 Fig. 3. Longitudinal section of the test. 

 Fig. 4. Transverse section. 



,, 5. — Miliolina crassatina, Brady, . . x 50 180 



a, Lateral aspect ; b, oral aspect. 



,, 6,7. — Miliolina agglutinans, d'Orbigny, sp., . x 50 180 



Fig. 6. a, Lateral aspect ; b, oral aspect. 

 Fig. 7. Transverse section of the test. 



„ 8-10. — Miliolina triquetr a, Brady, . x 30 181 



Figs. 8 a, 9. Lateral aspect ; 8 b, oral aspect. 

 Fig. 10. Longitudinal section of the test. 



,, 11 (?), 13, 14. — Spiroloculina asperula, Karrer, . . . 152 



Figs. 11a, 14 a, Lateral aspect ; b, b, oral aspect, . x 50 



Fig. 13. Lateral aspect, . . . . x 18 



,, 12. — Spiroloculina arenaria, u. sp., . . x 30 153 



a, Lateral aspect ; b, oral aspect. 



,, 15-20. — Miliolina alveoliniformis, Brady, . . . . 181 



Figs. 15 a, 16. Adult specimens, lateral aspect ; 15 b, oral 



aspect, .... 



Fig. 17. Young specimen, 

 Fig. 18. Longitudinal section of the test, 

 Figs. 1 9, 20. Transverse sections, . 



