DESCRIPTION OF THE PLATES. 93 



Fig. 1 2. The same, calicle, mag. 9 time?. 

 " 13. Stylaster filogranus Pourt., nat. size. 

 '■ 14. The same, branclilet mag. 4 times. 



PLATE VI. 



Fig. 1. Stylaster Du;ba«siingii Pourt., nat. size. 



'• 2. The same, branclilet, mag. 4 times. 



" 3. Oculina varicosa Lesueur, braneblet, nat. size. 



" 4. The same, calicle mag. 4 times. 



" 5. Errina carinata Point., mag. C times. 



" C. Diplohelia profunda Pourt., nat. size. 



11 7. The same, calicle mag. 4 times. 



" 8. Parasmilia Lvmani Pourt., nat. size. 



" 9. The same, calicle from above, mag. twice. 



" 10. The saaie, side view of a septum, showing the origin of the false columella and false 



pali ; mag. about 3 times. 



" 11. Paracyathus eonfertus Pourt., nat. size. 



" 12. The same, calicle from above, mag. 3 times. 



" 13. The same; a single specimen, the more usual form, mag. twice. 



" 14. Cffilosmilia fcecunda Pourt., nat. size. 



" 15. The same, calicle from above, mag. twice. 



" 16. Trochocyatbus ? coronatus Pourt., nat. size. 



PLATE VII. 



Fig. 1. Madracis decactis Verrill, mag. twice. 



" 2. The same, calicle, side view, mag. 12 times. 



" 3. The same, calicle from above, mag. 12 times. 



" 4. Madracis asperula M.-Edw. & II., calicle mag., 12 times. 



" 5. Fungia symmetrica Pourt., from above, mag. twice. 



" 6. The same, from below. 



" 7. Distichopora sulcata Pourt., nat. size (specimen belonging to D. Raphael Arango, in 



Havana), see Plate IV., fig. 14. 



" 8. Lepidopora glabra Pourt., branchlet, mag. 6 times. 



" 9. The same, verti 'al section, to show the columella. 



" 10. Lepidopora Dabneyi Pourt., branchlet, mag. G times. 



" 11. The same, vertical section. 



PLATE VIII. 



Map of tbe Straits of Florida. 



University Press, Cambridge : Printed by Welch, Bigelow, & Co. 



