PLATE VII. 



Fig. 



1. Gonioseris angulata, Duncan. (Page 21.) 



2. Under side — the base. 



3. Side view. 



4. Costse. 



5. Synapticulae. 



6. Gonioseris Leclcenbyi, Duncan. (Page 22.) 



7. Base. 



8. Side view. 



9. Costae at the angle of the base. 

 10 



-,-,'[ Small specimen of young Gonioseris. 



> Symphyllian form of a Thecosmilian. (Page 9.) 



12. 

 13. 



14. 

 15. 



