66 
CLASSIFICATIONS OF ZOOPHYTES. 
II. Section. Polypiers v^giniformes. * 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, Dichotomaria, 
Tibiana, Acetabulum, Polyphysa. 
III. Section. Polypiers a reseau. — 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, Echinopora, 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 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- 
mae resembling as many ovaries. 
Anthelia, Xenia, Ammothea, Lobularia. 
Order V. P. nat antes. 
Polypes united on a common free 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. 
