ABT. 22. CYCLOSTOMATOUS BRYOZOA — CANU AND BASSLEE. 153 



Plate 26. 



Figs. 1-4. Semicytis disparilis D'Orbigny, 1854 page 75. 



1. Zoariiim, natural size (after Gregory, 1909). 

 Cretaceous: Gravesend, England. 



2. A branch natural size. 



3. Celluliferous side, enlarged showing the openings of the apertures. 



4. Noncelluliferous side illustrating the nematopores (figs. 2-4, after 



D'Orbigny, 1854). 

 Cretaceous of France. 

 Figs. 5-7. Semicytis fenestrata D'Orbigny, 1852 page 76. 



5. Obverse face of base of zoarium with an ovicell X 15 (after Gregory, 



1909). 

 Cretaceous (Coniacian) : Chatham, England. 



6. Posterior face, X 12, showing the orifices of the nematopores. 



7. Anterior face illustrating the openings of the tubes. 

 Cretaceous (Coniacian) : Les Roches (Loir-et-Cher), France. 



Figs. 8-11. Trnncatiila ietragona Michelin, 1846 page 06. 



S. A specimen, X 6, with closely sp«ced pinnules. 



9. An example, X 6, exhibiting widely spaced pinnules. 



10. Lateral view of a branch, X 12. 



11. Posterior face, X 12, showing the orifices of the nematopores. 

 Cretaceous (Turonian) : Ruille Ponc6 (Loir-et-Cher), P^'rance. 



Figs. 32-16. Truncatula vendocinensis, new species page 69. 



12. Zoarial fragments, natural size. 

 33. A zoarial base, X 6. 



14. Anterior face, X 6. 



15. Dorsal, X 12, showing the orifices of the nematopores. 



36. Another dorsal, X 12, in which the nematopores are irregularly arranged. 

 Cretaceous (Santonian) : Vendome (Loir-et-Cher), France. 



Pt^te 27. 



Figs. 1-4. tiupercytis digitata D'Orbigny, 1854 page 73. 



1, 2. Profile of a colony, natural size and enlarged. 



3. The same specimen viewed from above and showing two ovicells. 



4. View of same from below. 



Cretaceous (Coniacian) : Fecamp, etc., France. 

 Figs. 5-11. Unicytis falcata D'Orbigny, 3854 page 73. 



5. 6. Lateral views of specimen natural size and enlarged. 



7. Posterior side, enlarged, showing the nematopores. 



8. Anterior side with the zooecial apertures. 



9. A cross section of a branch (figs. 1-9 after D'Orbigny). 



10. A longitudinal section, X 12, showing the zone of nematopores to the 

 right and the zooecia opening in the pinnules to the left. 



13. Transverse section X 12, illustrating the thick zone of nematopores 



which almost surrounds the branch. 

 Cretaceous (Santonian) : VendomS, France. 



Figs. 12-38. l)ipIodc.s)nopora aJIcrnatn, new species page 60. 



12-14. Anterior, lateral and posterior sides of an ovicelled specimen, X 12. 

 15. Dorsal of an ovicelled specimen showing the conical zone of growth and 



the nematopores. 

 16-18. Three views of the same specimen illustrating the lateral ovicell. 

 Cretaceous (Maastrichtian) : Maastricht, Holland. 



