Plate !•). 



Fig. 1. Meliceritites sarthacensis d'Orb. Distallj' is seen a lieterozooecium wliicli has been regenerated 

 and proxiraally one provided witli a calcareous mandible. X 34. 



— 2. The same species. There is seen two heterozooeeia, one of them with a calcareous mandible. 



X 34. 



— 3. Meliceritites maqnifica d'Orb. Of the six zooecia the four have been regenerated, and the aper- 



tures of the new zooecia have been closed by a concave lamina. (Not well executed). X 34. 



— 4. The same species. Four of the zooecia and three of the heterozooeeia have been regenerated 



and some of them twice. The aperture of the new zooeciura at the rigth side has been 

 closed by a concave lamina. X 34. 



— 5. The same species with ooecium. X 20. 



— (j. The same species with another form of ooecium. X 20. 



— 6a. The same species. Two of the zooecia are provided with an operculum, and two are closed by 



a lamina presenting a J. -shaped opening. X 31 



— 7. The same species. There is seen two different forms of closure. X 34. 



— 8. The same species. Different forms of closure from the same colony. X 47. 



— i) The same species. A regenerated zooecium with operculum. X 47. 



— 10. The same species. A transverse section through a heterozooecium to show the lateral processes 



covering the larger part of the aperture. X 47. 



— 11. Meliceritites gothica nov. nom. Three zooecia with opercula and one regenerated wliich lias been 



replaced by a heterozooecium. X 34. 



— 12. The same species. There is seen tliree kenozooecia, tliree zooecia with opercula, three closed 



heterozooeeia and three zooecia, all of which have been regenerated by means of hetero- 

 zooeeia. X 20. 



— 13. A zooecium of the same species. X 34. 



— 14. The same species. The aperture is closed bj' a flat lamina which has arisen from the free 



edge of the oral ledge. X 34. 



— 15. Meliceritites Vieilbanci d'Orb. Five of the zooecia have been regenerated. X 34. 



— 16. The same species. There are seen four zooecia with opercula, two regenerated, two open and 



two closed by a concave lamina. X 34. 



— 17. Meliceritites tri folium n. sp. Five zooecia with opercula. X 47. 



— 18. The same species. There are seen six heterozooeeia. and two zooecia regenerated by means of 



heterozooeeia. X 47. 



— 19. The same species. There is seen a heterozooecium, and three zooecia regenerated by means of 



heterozooeeia. (In one of them the two lateral processes have been broken off.) X 47. 



•) The present is the last plnle lithographed by the excellent artist Mr. C Cuiiuts, but the execution bears wit- 

 ness to that he has not been able to lay the last hand on it before his death. 



