. Carnegie Institution of Washington publication. 82 SIDERASTREA RADIANS. are complete and the fifth and sixth pairs are incomplete; the six pairs of second-cycle mesenteries are incomplete, and either eqnal or show by differences in sizes their dorso-ventral succession. The stage may be found among adult Edwardsias, though two or more pairs of second-cycle mesen- teries may here be wanting; adult members of the Ilyanthidas often present it, and probably all higher actinians in the course of their development. It is repeated b}^ the many pelagic anthozoan larvse described by Van Beneden (1897,
. Carnegie Institution of Washington publication. 82 SIDERASTREA RADIANS. are complete and the fifth and sixth pairs are incomplete; the six pairs of second-cycle mesenteries are incomplete, and either eqnal or show by differences in sizes their dorso-ventral succession. The stage may be found among adult Edwardsias, though two or more pairs of second-cycle mesen- teries may here be wanting; adult members of the Ilyanthidas often present it, and probably all higher actinians in the course of their development. It is repeated b}^ the many pelagic anthozoan larvse described by Van Beneden (1897, p. 189), numbered viii to xv, and which the author regards as belong- ing to the Illb Illb lib ille. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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