DESCRIPTION OF PLATES. f^'''!''% 



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PLATE I. 



1. Catenicella oentricosa, single zocecium, front and dorsal. 



2. Catenicella oentricosa, geminate pair of zooecia. 



3. Catenicella nobilis, geminate pair of zocecia, front and dorsal, 



4. Catenicella ainpla, anterior surface of 7, fenestrate form; ia, posterior surface 



of same ; 46, lateral view. 



5. Catenicella ampla, anterior and dorsal view of geminate zooecia of 9, fenestrate 



form. 



6. Catenicella anipla, anterior view of gdminate pair of zooecia, 7, fenestrate form. 



7. Catenicella circuincincta, anterior and dorsal views of single zooscium. 



8. Catenicella expansa, single specimen. 



9. Catenicella expansa, geminate pair of zocecia. 



10. Catenicella mamillata, geminate pair of zooecia. 



11. Catenicella mamillata, single zoo?cium, front and dorsal view. 



12. Catenicella tennis, geminate pair of zocecia. 



13. Catenicella tenuis, single zocecium. 



14. Catenicella tenuis, variety, single zocecium. 



15. Catenicella pulchella, geminate pair of zocecia. 



16. Catenicella elongata, geminate pair of zocecia, front and dorsal view. 



17. Catenicella alata, geminate pair of zocecia, front and dorsal view. 



18. Catenicella crux, single zocecium, front and dorsal view. 



19. Catenicella porosa. 



20. Catenicella cribraria, single zocecium, front and dorsal view. 



21. Catenicella liastata, geminate pair of zocecia, front and dorsal view. 



22. Catenicella hastata, another pair of geminate zocecia. 



23. Cateuicella hastata, single zocecium. 



24. Catenicella retrocersa, single zocecium, front and dorsal view. 



25. Catenicella niarginata, geminate pair of zocecia, front and dorsal view. 



26. Catenicella marginata, single zocecium, front and dorsal view. 



27. Catenicella marginata, single zocecium, front and dorsal view. 



28. Catenicella dcedala, geminate pair of zocecia, front and dorsal view. 



29. Catenicella eincta, single zocecium, front and dorsal view. 



30. Catenicella lineata, single zocecium, front and dorsal view. 



31. Catenicella latifrons, geminate pair of zocecia, front and dorsal view. 



W2 



