. Bulletin of the Essex Institute. Essex Institute; Natural history -- Periodicals; Essex County (Mass. ) -- History Periodicals. 22 CCELENTERATA AND A. II. Willia. Bell disk-like with small clusters of lasso-cells at intervals on the external walls. Tubes branched, four at origin from the proboscis. W. ornata. A. III. Mabella. Bell globose. Tubes eight. Tentacles numerous, short, flexible. Proboscis small with lateral buds. M. gracilis. Melicertum. Bell oval, tall, mitre-shaped. Tubes eight. Tentacles numerous, long and very flexible. Pro- boscis with complicated lips. Tubes with ovaries alon
. Bulletin of the Essex Institute. Essex Institute; Natural history -- Periodicals; Essex County (Mass. ) -- History Periodicals. 22 CCELENTERATA AND A. II. Willia. Bell disk-like with small clusters of lasso-cells at intervals on the external walls. Tubes branched, four at origin from the proboscis. W. ornata. A. III. Mabella. Bell globose. Tubes eight. Tentacles numerous, short, flexible. Proboscis small with lateral buds. M. gracilis. Melicertum. Bell oval, tall, mitre-shaped. Tubes eight. Tentacles numerous, long and very flexible. Pro- boscis with complicated lips. Tubes with ovaries along their whole length. M. [B. I, a. Obelia. Body disk-shaped, transparent, colorless. Sense-capsules with numerous otoliths, arranged at irreg- ular intervals about the bell rim. Numerous rigid tenta- cles. Four tubes. Ovaries spherical, pendent from the tubes. The bell o ten reversed, and turned in such a. 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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