Plate III. 



Fig 1 Mclicerilitcs Idinellnsa d'Orb. Three zooecia with opcrcula, and two holerozooecia in old zooecia, 

 the aperture of wliich is not wliolly talicn up by the new zooids. The lateral margins of 

 the heterozooecial apertures are not distinct. > 34 



— 2. The same species. Two regenerated zooecia with opercula and a hcterozooecium. X 34. 



— 3. The same species. Four heterozooecia one of which takes up the whole aperture of an old 



zooecium. Two of them are provided with a mandible. X 34. 



— 4. The same species. Two heterozooecia in old zooecia. The aperture of the distal one is partly 



closed. X 34. 



— ,">. The same species. Four heterozooecia one of which takes up the whole aperture of an old 



zooecium. The distal one on the left side has been regenerated. X 34. 



— (). A regenerated heterozooecium. X 34. 



— 7. The same species. Four regenerated zooecia, two of which are provided with opercula and 



one with a closure-lamina. Three regenerated heterozooecia. X 34. 



— 8. The same species. X 34. 



— 9. The same species. An ooecium > 20. 



— 10. Meliceritiles inicropora d'Orb. Three regenerated zooecia and two zooecia with opercula. X 34. 



— 11. Meliceritiies Steenslrupi Pergens The hinder surface with the heterozooecia. X 20. 



— 12. The same species. Three heterozooecia. X 34. 



— 13. The same species. Two zooecia' with opercula. X 34 



— 14. Melicerilites nrmata n. sp. The hinder surface with kenozooecia and heterozooecia X 20. 



— 15. The same species. A zooecium with operculum. X 34. 



— 16. The aperture of a heterozooecium. X 34. 



— 17. Melicerilites cenomana d'Orb. A heterozooecium. X 34. 



— 18. The same species. >, 34. 



— 19. Meliceritites Canui n. sp. The hinder surface with the heterozooecia. X 20. 



— 20. The same species. Three heterozooecia. X 34. 



— 21. The same species. Two zooecia with opercula. X 47. 



— 22. A heterozooecium. X 47. 



— 23. A heterozooecium the aperture of which is partially closed. X 47. 



— 24. A heterozooecium with a very elongate aperture. X 47. 



— 25. A heterozooecium tlie aperture of which is not far from being perfectly closed. X 47. 



— 26. A zooecium with a closure-plate. X 47. 



— 27. A heterozooecium which takes up the aperture of an old zooecium. X 47. 



