Plate 16 



Page 

 Figs. 1—4. Leiosoecia grand) pora, new species 77 



I. Fragments, natural size. 



2, 3. A l)ifurcated specimen, X 12, and surface, X25. Meso- 

 poi"es are rare. 



4. Ovicelied specimen, X2o. 



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

 land. 

 Figs. 5-8. Trdocycloecia multiporosa, new species S3 



5. Branches, natural size. 



6. Extremity of an ovicelied specimen, X12. 



7, 8. Ovicelied specimen, X 12, and surface, X2.5. The ovi- 

 cell is broken and incomplete. 

 Lower Cretaceous (Aptian): Faringdon, England. 



Figs. 9-14. Tretocijdoecia densa, new species 83 



9. Zoarial fragments, natural size. 

 10. Ovicelied specimen, X12. The ovicell shows a \rjr- 

 tion of the enclosing superior lamella. 



II. Ovicelied specimen, X12, exhibiting the transverse 



section of a broken branch. 



12. Specimen with salient peristomes, X12. 



13. Bifurcated, ovicelied fragment, XI 2. 



14. Tangential section, X25. 



Lower Cretaceous (Aptian): Faringdon, England. 

 Figs. 15-18. Leiosoecia aequiporosa, new species 75 



15. Fragments, natural size. 



16. Extremity of an ovicelied branch, X12. 



17. Specimen, X12, showing the internal structure of 



the ovicell. 

 IS. Portion of Figure 16, X25. 

 19. Tangential thin section, X25. 



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

 zerland. 



109 



