A history of the British sea-anemones and corals . 1828. It is, however, 1believe, still a desideratum. The genus is marked by the following characters:Corallum massive or sub-tree-like, with thick, imperforatewalls. Visceral chambers divided by well-developed hori-zontal partitions, or floors, in successive stages. Platesrudimentary. Calices shallow, with a thick ring at thebottom of each, forming a sort of columella. LUCERNARIADyE. Contrary to my original intention, I have determined toexclude this family from my work. Their true affinitiesare with the Hydiozoa and Medusa*.. The gelatinous t
A history of the British sea-anemones and corals . 1828. It is, however, 1believe, still a desideratum. The genus is marked by the following characters:Corallum massive or sub-tree-like, with thick, imperforatewalls. Visceral chambers divided by well-developed hori-zontal partitions, or floors, in successive stages. Platesrudimentary. Calices shallow, with a thick ring at thebottom of each, forming a sort of columella. LUCERNARIADyE. Contrary to my original intention, I have determined toexclude this family from my work. Their true affinitiesare with the Hydiozoa and Medusa*.. The gelatinous tex-ture, the expanded umbrella, the ovaries in the the umbrella, the four-lipped mouth placed at the end ofa free peduncle, and the quadripartite arrangement, are allMedusan characters. The tentacles in marginal groups arefound in Bougainvillcea, and their form,—knobs at the tipof long footstalks,—agrees more with Slabberia than withCorynaciis and Caryojdiyllia. * See my fig. of Campanularia. in Devonsh. Coast, p. 296, pi. ? ? • /? ,*w -<*& ?_,* •.,
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