CLASSIFICATION OF ZOOPHYTES. 117 
Famity I]. Favosrripm. Polyps with 12 tentacles, secreting lime periodically at 
base, and hence the cells have a caleareous bottom and in the interior of the corallum are 
transversely septate, rarely solid. 
Genera. Alveopora (Alveoporine) ; Sideropora, Seriatopora, Pocillopora, Stenopora, 
Constellaria, Favyosites, Catenipora (Javositine); Heliopora, Heliolites, Millepora, 
( Helioporine). 
Famity I]. Porrrr. Polyps with rarely more than 12 tentacles, forming porous 
calcareous secretions continuously at base; coralla every where equally fine-porous, 
cells shallow or superficial and scarcely traceable within the corallum, rays indistinct. 
Genera. Porites, Goniopora. 
Trise IV.—ANTIPATHACKA, 
Animals with 6 tentacles, forming at base corneous secretions. 
Famity |. Anriparmip%. Animals fleshy, enveloping a corneous spinulous axis. 
Susorper I]—ALCYONARIA. 
Animals with 8 tentacles; tentacles papillose, papille perforate 
at apex: often coralligenous; coralla calcareous or corneous, rarely 
siliceous, cells never radiate within. 
Famity [. Pennarutipm. Never attached, but either free or with the base buried in 
_ the mud. 
Genera. Renilla, Pennatula, Veretillum, Funiculina, Virgularia (Pennatuline) ; 
Pavonaria, Umbellularia (Pavonarine). 
Famity II], Ancyontpm. Fleshy, usually containing disseminated calcareous granules. 
Genera, Rhizoxenia, Anthelia, Xenia (Xenin@) ; Ammothea, Sympodium, Nephthya, 
Aleyonium (Alcyonine) ; Spoggodia ( Spoggodine). 
Famiry III. Cornutarmsx. Forming corneous tubular coralla. 
Genus. Cornularia. 
Famiry IV. Tusreorrp. Forming calcareous tubular coralla. 
Genera. Aulopora, Telesto, Tubipora, Syringopora (?). 
Famity V. Gorconip%. Forming basal epidermic secretions, and often, also, other 
tissue secretions, the latter separable from the former. 
Genera. Corallium (Coralliine) ; Hyalonema, Briareum, Gorgonia, Primnoa, Bebryce 
(Gorgonine) ; Isis, Mopsea, Melitea (sine). 
Orper II.—HYDROIDEA. 
Animals with the internal cavity tubular and quite simple: ovules 
growing outward from the sides. 
Famity I. Hypripm. Ovules single; buds lateral, young falling off when full grown: 
c= aia J to) D t=] 
not coralligenous. 
Genus. Hydra. 
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