IIISTOIIUO DES IIYOKOÏDKS 27 



Fleming 1828. 



1 >' \ K liT K lut AL A N I M A I.S . 



II. Hadiata. 



ClaSS. I ECHINODERMATA. 

 ClaSS. II ACALEPHA. 



l'« Sec. Fixed. 

 2mo ,, Free. 



gen. Geryonia, etc. 



ClaSS. III ZOOPHYTA. 



1 Carnosa. 



C'orallinadfT. 

 gen. Alcyonimn. 



2 Cellulifera. 



3 Thecata. 



1 Cellariacl». 



2 Sertulariad*. 



I Base of the cells bread, coalescing witli 



tlie stem. 

 a) Celles on opposite sides of the stem. 



gen. Sertulaiia, Dynamena, Tlmiaria. 

 aa) Cells unilatéral. 



gen. Antenmdaria, Flumularia. 



II Base of the cells narrow, or pediinculated. 



gen. Campamdaria, etc. 

 III Sheath membranaceous, the cells are the 

 simple extremities of the branches. 

 Tiihulariadœ. 

 gen. Tubularia, etc. 



4 Nuda. 



gen. Coryna, Hydra. 

 ô Vibratoria. 



