160 DESCRIPTION OF PLATES. 



PLATE VII. (Continued). 



11. Selenaria squamosa, car. lucida, natural size, 11a portion of anterior surface 



magnified, 116 dorsal aspect. 



12. Selenaria squamosa, another specimen, natural size, 12a part of anterior surface 



magnified, 126 dorsal aspect. 



13. Selenaria squamosa, var. pulchella, natural size, 13a anterior view of zooecia, 



136 posterior aspect. 



14. Selenaria cupola, natural size, 14a anterior view magnified, 146 dorsal aspect. 



15. Selenaria concinna, natural size, 15a part of anterior surface magnified shewing 



two vibracular cells, 156 dorsal view. 



PLATE VIII. 



1. Lunulites angulopora ? 



2. Membranipora profunda. 



3. Macropora centralis. 



4. Lepralia crassatina. 



5. Macropora clarkei. 



6. Macropora clarkei, natural size, 6a three zooecia magnified. 



7. Lepralia hebetata. 



8. Cribrilina suggerens. 



9. Cribrilina radiata. 



10. Cribrilina cornuta, shewing an avicularium. 



11. Cribrilina cornuta, single zooscium from another specimen. 



12. Cribrilina cornuta, group of zooecia from an older specimen. 



13. Cribrilina terminata, specimen shewing ooecia. 



14. Cribrilina terminata, another specimen. 



15. Membraniporella tenuicosta. 



16. Membraniporella tenuicosta, single zooecium. 



17. Cribrilina orbicula. 



18. Cribrilina dentipora. 



19. Cribrilina elevata, natural size and magnified. 



20. Corbulipora ornata. 



21. Corbulipora ornata, shewing also ooeciurn. 



22. Miantopora monoceros, Busk, sp. 



23. Hiantopora magna. 



24. JPachystomaria parvipuncta. 



25. Hiantopora halli, natural size, 25a portion magnified, 256 two zocecia from 



same, 25c end view of zocecia. 



