450 CLASSIFICATIONS OF ZOOPHYTES. 



III Section. POLYPIERS A EESEAU. Flustra, Tubulipora, Dis- 



copora, Cellepora, Eschara, Adeona, Retepora, Alveolites, 

 Ocellaria, Dactylopora. 



IV Section. POLYPIERS FORAMINES. Ovulites, Lunulites, Or- 



bulites, Distichopora, Millepora, Favosites, Catenipora, Tu- 

 bipora. 



V Section. POLYPIERS LAMELLIFERES. * Stars terminal Sty- 



lina, Sarcinula, Caryophyllia, Turbinolia, Cyclolites, Fungia. 

 ** Stars lateral or spread over the surface Pavonia, Aga- 

 ricia, Meandrina, Monticularia, Echinoporia, Explanaria, 

 Astrea, Porites, Pocillopora, Madrepora, Seriatopora, Ocu- 

 lina. 



VI Section. POLYPIERS CORTICIFERES.' Corallium, Melitsea, Isis, 



Antipathes, Gorgonia, Corallina. 



VII Section. POLYPIERS EMPATES. Penicillus, Flabellaria, 



Spongia, Tethia, Geodia, Alcyonium. 



Order IV. P. TUBIFERI. 



Polypes united on a common fleshy living body, either simple or lob- 

 ed, or branched, and attached by its base : no external polypi- 

 dom ; no solid internal axis ; the surface loaded with numerous 

 tubiform little cylinders, rarely entirely retractile. Mouth ter- 

 minal ; tentacula 8, pectinated ; no anus ; 8 longitudinal semi- 

 partitions underneath the stomach ; 8 intestines of two kinds ; 

 6 groups of gemmae resembling as many ovaries. 

 Anthelia, Xenia, Ammothea, Lobularia. 



Order V. P. NATANTES. 



Polypes united on a common free elongated fleshy and organic body, 

 enveloping a cartilaginous almost bony and sometimes stony 

 inorganic axis. Tentacula set in a radiating manner round the 

 mouth of each polype. 



Veretillum, Funiculina, Pennatula, Renilla, Virgularia, 

 Encrinus, Umbellularia. 



In the outline this system is not very materially different 

 from that of Cuvier, the deviations being sometimes for the 

 better and sometimes for the worse. If the Polypi ciliati are 

 to be numbered amongst proper zoophytes, it is for the better 

 to have them placed in a separate order ; but Zoantha is 

 badly associated with the Hydra, Coryne, and the spurious 

 Pedicellaria. The Polypi vagmati, considered as an order, 



