CLASSIFICATIONS OF ZOOPHYTES. 61 



Flustra. 

 Cellepora. 

 Tubiilipora. 

 Corallina. 



Fam. iii. Les Polypes corticaux. 

 Tribe 1. Des Ceratophytes. 



Antipatbes. ■ 



Govgonia. 

 Tribe 2. Les Lithophytes. 



Isis. 



JNIadrepora. 



Millepora. 

 Tribe 3. Polypes Nageurs. 



Pennatula. Subgenera — Pennatula, Cuv. Virgiilaria, 

 Lam. Scirpearia, Cuv. Pavonaria, Cuiu Renilla, 

 Lam. Veretillum, Cuv. Ombellularia, Cuv. 

 Tribe 4. Alcyons. 



Alcyonium. 



Spong-ia. 



In the definitions there is throughout a certain degree of 

 vaofueness, or at least the absence of that finicalness, which 

 is so pleasing to the practical systematist ; and in the value 

 of the characters chosen to separate the orders and families 

 there is great inequality. Hydra and Corine, for example, 

 are more nearly allied to Tubularia and Sertularia, than 

 the latter are to the Ceratophytes, yet these are placed in one 

 and the same, and the Hydra in a separate order. Had the 

 Ceratophytes been elevated to the rank of an order, and the Ma- 

 drepora been removed to the Polypes chamus, the system would 

 have been improved, and no very obvious alliances broken. In 

 the subordinate parts of the system there are many misplace- 

 ments of the subgenera, as the genera of his contemporaries were 

 named, of which we may instance the Campanularia which is 

 placed under Tubularia of Linnaeus, to which, however, it has 

 certainly much less affinity than to the Sertularia, where it had 

 always hitherto been assigned. 



In 1810, Lamouroux of Caen presented to the Academy of 

 Sciences of Paris a new classification of the flexible polypidoms; 

 and it would appear that Lamarck was engaged at the same time 



