PLATE XI. 



OcuLiNA MississipPiENSis (Oonrad). 



(Page 118.) 



Figs. 1 and la. From Conrad's typo in the Philadelphia Academy of Natural Sciences. Fig. 1, general 



view, natural size; tig la, calice, X 3^. 

 Fig. 2. Another specimen in the Philadelphia Academy of Natural Sciences, natural size. 

 Figs. 3 to 7. A series showing variation, natural size. 

 Figs. 8 to 10. Drawn from photographs of Milne-Edwards and Haime's types of Oculina americana in 



the Musium d'Histoire Naturelle, Paris. Fig. 8, length of specimen, 89 mm.; fig. 



9, length of specimen, 28 mm. ; tig. 10, diameter of calice, 4 mm. 

 Fig. 11. A specimen with almost sunken calices, natural size. Fig. 11a, calice, X3J. 

 Fig. 12. A specimen with prominent calices, natural size; fig. 12a, outside of two corallites enlarged; 

 fig. 12b, calice, X 3. 

 All figures drawn by Dr. J. C. McConnell. 



[The title at bottom of the facing plate should read Oculina missisaippiensis instead of "Oculina vicksburgensis."] 



230 



