06 CLASSIFICATIOXS OF ZOOPHYTES. 



II. Section. Polypiers vaginiformes. * Polypidoms naked, not 



varnished nor encrusted on the exterior. (J) Cells terminal 



Plumatella, Tubularia, Cornularia, Campanularia. (2) 



Cells lateral — Sertularia, Antennularia, Plumularia, Seria- 



laria. ** Polypidoms varnished or slightly crusted on the 



exterior. Liriozoa, Cellaria, Anguinaria, Dichotoraaria, 

 Tibiana, Acetabulum, Polyphysa. 



III. Section. PoLYPiERS A RESEAU. — Flustra, Tubulipora, Dis- 



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

 Ocellaria, Dactylopora. 



IV. Section. Polypiers foramines. — Ovuhtes, 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, Echinopora, Explanaria, 

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



lina. 



VI. Section. Polypiers corticiferes — Corallium, Melitaea, 



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 polypidom ; 

 no solid internal axis ; the surface loaded with numerous tubiform 

 little cylinders, rarely entirely retractile. Mouth terminal ; ten- 

 tacula 8, pectinated ; no anus ; 8 longitudinal semi-partitions un- 

 derneath the stomach ; 8 intestines of two kinds ; 6 groups of gem- 

 mfB resembling as many ovaries. 



Anthelia, Xenia, Ammothea, Lobularia. 



Order V. P. natantes. 

 Polypes united on a common fi-ee elongated fleshy and organic body, 

 enveloping a cartilaginous almost bony and sometimes stony inor- 

 ganic axis. Tentacula set in a radiating manner round the mouth 

 of each polype. 

 Veretillum, Funiculina, Pennatula, Renilla, Virgularia, Encrinus, 



Umbellularia. 



