DESCRirnON OF THE PLATES. 93 



Fig. 1 2. The sime, caliclc, mag. 9 times. 

 " ]:}. Stylaster filogranus Pourt., iiat. size. 

 '• 14. The same, br.inclilet mag. 4 times. 



PLATE VI. 



Stylaster Diuha^saingii Pourt., nat. size. 



The same, branchlet, mag. 4 times. 



Oculina varicosa Lesueur, branchlet, nat. size. 



The same, calicle mag. 4 times. 



Errina carinata Pourt., mag. C times. 



Diplo'aelia i)rofLinda Pourt., nat. size. 



The same, calicle mag. 4 times. 



Parasinilia Lymani Pourt., nat. size. 



The same, calicle from above, mag. twice. 



The same, side view of a septum, showing the origin of the false columella and false 



pali; mag. about 3 times. 

 Paracyathus confertus Pourt., nat. size. 

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

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

 Cielosmilia fcecunda Pourt., nat. size. 

 The same, calicle from above, mag. twice. 

 Trochocyathus ? 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. & H., calicle mag., 12 times. 



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



" G. 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. 



" y. The same, verti -al section, to show the columella. 



" 10. Lepidopora Dal)neyi Pourt., branchlet, mag. 6 times. 



" 11. The same, vertical section. 



PLATE VIII. 



Map of the Straits of Florida. 



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



