PLATE XII. 



Fig. 

 I. Trigonia Carrei, Mim. dial. Portland Limestone, Tisbury, Wilts. (Page 72.) 



Painei, Lye. Great Oolite, Minchinhampton. (Page 59.) 



,, Specimen from the Great Oolite of South Lincolnshire. 



„ Young example from the same locality. 



costatula, Lye. Young example. Inferior Oolite, Leckhampton Hill, 

 Cheltenham. (Page 81.) 6, a, enlarged. 



tripartita, Forbes. Cornbrash, Chippenham. (Page 74.) 



suhglohosa. Lye. Inferior Oolite, near Stroud. (Page 68.) 



„ Large specimens' of the same species, from the same for- 

 mation and locahty. Coll. Royal School of Mines. 



2, 



3. 



jj 



4. 





}■) 



5. 





■>■> 



6, 



6, a. 



)) 



7. 





33 



8. 





33 



9, 



10. 



33 



