The porifera and coelentera . solenia, and conse(piently it l>ears a closeresemblance to Syringopora (comp. Fig. VIII. with Fig. X. 7). Thecharacter in question, if of constant occurrence, would warrant theplacing of C. viridis in a new genus allieil to the Syringo{xiridae andTubiporidae. As it is, the cliaracter must be reganled as accidental ratherthan essential, but is of importance as indici\ting the atfinities of the last-named families with the Cornulariiilae.] Sarcfxlictijoti, Forbes, like Clavu-laria, but the zooids are wholly retractile within cushion-like thickeningsof their bases
The porifera and coelentera . solenia, and conse(piently it l>ears a closeresemblance to Syringopora (comp. Fig. VIII. with Fig. X. 7). Thecharacter in question, if of constant occurrence, would warrant theplacing of C. viridis in a new genus allieil to the Syringo{xiridae andTubiporidae. As it is, the cliaracter must be reganled as accidental ratherthan essential, but is of importance as indici\ting the atfinities of the last-named families with the Cornulariiilae.] Sarcfxlictijoti, Forbes, like Clavu-laria, but the zooids are wholly retractile within cushion-like thickeningsof their bases. Sympoiiium, Ehrb., the crustaceous stolon is thickened THE ANTHOZOA locally, so that the proximal portions of the zooid cavities are sunk in acoenenchyraa. Family 2. Sykingoporidae. Genus—Syringopora, Gold-fuss. This extinct genus resemhles Cluvidaria viridis; the cavities of thezooids are divided by cup-shaped transverse partitions called tabulae (Fig. ). FA31ILY 3. TuBiPORiDAE. Genus—Tubipora, Linnaeus. The zooids. ^IfS^: Fig. X. 1.—Diagram of the stnicture of a corallitp of Tulnpora purpurea, showing tlie tabulae in thefonii of axial tubes, hji, horizontal platforms; t, solenia. •_.—A similar diagram, showing conii)Iicat«;cl tabulae. 3.—View of the inner surface of a corallite of T. purpurea, showing the numerous lacunae, hin the walls of the corallite, and in the region of the node the larger perforations, II, throughwhich solenia jjass into the i)Iatfonn8. 4.—Diagram showing two tabulae broken across where one tabula (it) runs inside anotliertabula (if). 5.—Diagram showing simple, flat, or cup-shaped tabulae. G.—Portion of the edge of a growing tabula, showing how the corallum is formed by theunion of spicules. 7.—Portion of a colony of Syringopora ramulnsa, showing the transverse connections betweenthe corallites which correspond to the solenia in the platfonns of Tubipora; it, a tabula.(After Hickson.) are elongate, ranged side by side, and spri
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