. Bulletin of the Essex Institute. Essex Institute; Natural history -- Periodicals; Essex County (Mass. ) -- History Periodicals. 18 CCELENTERATA AND Bell oval. Tubes four. Tentacles marginal, four, long, flexible, each with a single bright red pigment spot on under side of base at the extremities of the ves- sels. Proboscis very long, highly contractile ; when ex- panded the extremity reaches far outside the entrance into the bell-cavity. Lips simple, ovaries inconspicuous. S. mirabilis. Dipurena. Bell half egg-shaped. Tubes slender, four. Four stiff, short tentacles with an enlarge
. Bulletin of the Essex Institute. Essex Institute; Natural history -- Periodicals; Essex County (Mass. ) -- History Periodicals. 18 CCELENTERATA AND Bell oval. Tubes four. Tentacles marginal, four, long, flexible, each with a single bright red pigment spot on under side of base at the extremities of the ves- sels. Proboscis very long, highly contractile ; when ex- panded the extremity reaches far outside the entrance into the bell-cavity. Lips simple, ovaries inconspicuous. S. mirabilis. Dipurena. Bell half egg-shaped. Tubes slender, four. Four stiff, short tentacles with an enlarged club-shaped distal extremity. Eye-spot at the basal end. Proboscis very long, with large swellings crowded with ova in fe- male. Lips simple. D. DIPUHEXA. Ectopleura. Bell ovate with a slight apical projection. Tubes four. Eight rows of lasso-cells arranged on the outer wall of the bell in pairs, each pair arising from the base of a tentacle and extending to the apex of the bell. Tentacles four, generally coiled about their origin at the bell rim. Each tentacle in adult with clusters of lasso-cells at intervals in its length. Proboscis two-thirds the height of the hell cavity. Lips simple. E. ochracea. 'Closely related to this is the free form of Hyclrichthys which is attached to wall ol' fish Seriola 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 Essex Institute. Salem, Mass. , Essex Institute
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