17 4 ZOOPHYTES. 



the meandering cell, through its whole length, and between, at inter- 

 vals, are the polyp mouths. The calicularly branched species pass 

 gradually into the massive, as in the genus Manicina, and these re- 

 semble the Meandrinse, except in their larger size, the thicker and 

 fewer lamellae, coarser dentation, and in being usually stipitate. 



These corals differ from the Euphylliae in their open concave cells, 

 with a broad bottom, and their thicker gashed lamellae. They pass 

 into the Caulastrseee, which have smaller concave cells, and also more 

 cylindrical and fragile branches, and more crowded, nearly entire, 

 lamellae. 



The Mussae are confined, as far as known, to the coral-reef seas. 

 Species occur both in the East and West Indies, and in the Pacific. 



The genus Mussa as established arid characterized by Oken,* a 

 German author distinguished for the originality of his views, and his 

 innovations in all branches of science, has nearly the limits of La- 

 marck's Caryophyllia, a name long prior in date. As the species, 

 which Oken referred to his genus, belong, with one exception, to the' 

 group before us, it seems obligatory, Caryophyllia being otherwise 

 used, to retain for it Oken's name, in preference to Blainville's Lobo- 

 phyttia, subsequently given to these zoophytes. In mentioning Blain- 

 ville's Lobophyllia, Ehrenberg significantly adds, "vox hybrida." 

 This genus is the Caryophyllia of Ehrenberg, excepting that a few 

 species are separated, which belong to the genus Euphyllia, and some 

 massive meandering species are added. 



Arrangement of the Species. 



I. Calicularly branched, cells simple or somewJiat lobed. 



1. M. fastigiata. 4. M. corymbosa. 



*2. M. carduus. *5. M. cactus. 



*3. M. angulosa. *6. M. costata. 



II. Calicularly branched, cells mostly sinuous or meandering. 



*7. M. sinuosa. *10. M. cerebriformis. 



*8. M. cytherea. *11. M. regalis. 



*9. M. multilobata. 



HI. Massive, meandering. 



*12. M. crispa. *15. M. gyrosa. 



*13. M. dipsacea. *16. M. recta. 



14. M. fragilis. *17. M. sinuosa. 



* Oken's Lehrbuch der Naturgeschichte, Zoologie i. 73. Published at Jena in 1815. 



