PLATE XII. 



Plantspieina. — Ophthalmidium. — Veetebralina. — Articulina. 



Diani. P a g e 



Figures 1-4. — Planispirina eodgua, Brady, . . x 50 196 



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

 Figs. 3, 4. Horizontal sections of the shell. 



„ 5, 7, 8. — Ophthalmidium inconstans, Brady, . . . 189 



Fig. 5. Lateral aspect, . . . x 30 



Figs. 7, 8. Lateral aspect, . . x 50 



,, 6 — Ophthalmidium tumidulum, n. sp., . . x 50 189 



„ 9-11. — Vertebralina insignis, n. sp., . . x 50 187 



Figs. 9 a, 10, 11. Lateral aspects; 9 b, oral 

 aspect. 



,, 12,13. — Articulina sulcata, Reuss, . . x 50 183 



Figs. 12a, 13. Lateral aspects; \2b, oral aspect. 



,, 14-16.- — Vertebralina striata, d'Orbigny, . . x 50 187 



Figs. 14, 15 a, IB. Lateral aspect; 15 6, oral aspect. 



,, 17,18. — Articulina conico-articulata, Batsch, sp., . . x 50 185 



Figs. 17, 18 a, Lateral aspect ; 18 b, oral aspect. 



,, 19—21. — Articulina lineata, n. sp., . . x 50 183 



Figs. 19-21. Lateral aspect ; b, oral aspect. 



,, 22-24. — Articulina sayra, d'Orbigny, . . x 50 184 



Figs. 22-24. Lateral aspect ; 6, oral aspect. 



