Plate 9 



Page 

 Figs. 1-10. Ceriocava midtilarnellosa, new species 68 



1. Zoarial fragments, natural size. 



2. An example, X12, on which a lamella with facettes 



covers a portion without facettes. 

 3,4. Young branch, X12 and X25, showing the round 



median orifice in the hexagonal facette. 

 5, 6. Branch, X12 and X25, on which the tubes with 



facettes ^alternate witli the others. 

 7,8. Fragment, X12 and X25, with facettes, showing the 

 zone of growth of a second lamella. 

 9, 10. Branch without facettes, X12 and X25. 



Lower Cretaceous (Valangian) : Sainte-Croix, Swit- 

 zerland. 



Figs. 11-13. Ceriocava junctata, new species 67 



11. Zoaria, natural size. 

 12, 13. Portion of a hollow unilamellar zoraium without 

 facettes, X12 and X25. 

 Lower Cretaceous (Valangian): Sainte-Croix, Swit- 

 zerland. 



Figs. 14-17. Ceriocava grandipora, new species 67 



14, 15. Fragments, natural size and X3. The base is 

 orbicular and the extremity of the branches is 

 conical. 



16. Ovicelled specimen, X12. 



17. Normal specimen without ovicells, X12. 

 Lower Cretaceous (Valangian) : Sainte-Croix, 



Switzerland. 

 102 



