DESCRIPTION OF PLATES. 159 



PLATE VI. 



1. Amphiblestrum coriense. 



2. Amphiblestrum cylindriformis, natural size and magnified. 



3. Amphiblestrum annidus. 



4. Farcimia lusoria. 



5. Farcimia articulata. 



6. Farcimia oculata. 



7. Farcimia oculata. 



8. Caleschara denticulata, specimen showing the lateral fissures and cross-bar. 



9. Caleschara denticulata, natural size, da group of zocecia with the central portion 



and cross-bar worn away. 



10. Thalamoporella rozieri. 



11. Thalamoporella lata. 



12. Membranipora ambigua. 



13. Membranipora bidens. 



14. Steganoporella magnilabris, natural size, 14a anterior view of group of zooecia 



magnified 146, posterior view of two zooecia. 



15. Steganoporella magnilabris. 



16. Steganoporella magnilabris. 



17. Steganoporella depressa. 



18. Steganoporella lateralis. 



19. Steganoporella patida, natural size, 19a portion magnified. 



20. Steganoporella patula, portion of another specimen shewing ooecium and 



avicularia. 



PLATE VII. 



1. Lunulites parcicella, natural size, la portion of anterior surface magnified, 16 



dorsal surface. 



2. Lunulites parvicella, specimen shewing the two forms of vibracular cells. 



3. Lunulites canaliculata, anterior and dorsal view. 



4. Lunulites rutella, natural size, 4a anterior surface, 46 dorsal view. 



5. Selenaria maculata, natural size. 



6. Selenaria maculata, portion of a specimen shewing zocecia and vibracular cells, 



6a posterior view of same. 



7. Selenaria maculata, group of zooecia from another specimen, 7a dorsal view of 



part of same. 



8. Selenaria punctata, natural size, 8a part of anterior surface, 86 dorsal view. 



9. Selenaria punctata, part of another specimen to shew vibracular cell. 

 10. Selenaria squamosa, anterior view of young specimen magnified. 



x 



