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In the Astraeans, the multiplication of tentacles is more definite and limited, rising sometimes to ninety and more, though often limited to forty-eight in number, and the transverse floors between the vertical partitions are more complete than in the Fungidae.
Now in these lowest Polyps, the Actiniae, the tentacles increase with age indefinitely, never ceasing to grow while life lasts, new chambers being constantly added to correspond with them, till it becomes impossible to count their numbers. Next to these come the true Fungidae. They are also single, and though they are stony Corals, they have no share in the formation of Reefs.
Astraeans: tentacles not definitely limited in number, though usually not exceeding one hundred, and generally much below this number; transverse floors. Maeandrines, generally referred to Astraeans, are higher than the true Astraeans, on account of their compound Polyps. Fungidae: indefinite multiplication of tentacles; imperfect transverse beams.
Neither do we find the Fungidae, for they, like all low forms, are single, and not confined to one level, having a wider range in depth and extent than other stony Polyps.
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