. Contributions to the natural history of the United States of America. Zoology; Chelonia (Genus); Ctenophora; Cnidaria; Animals. Pelagia cyasella, Per. and LeS. ! a Umbrella. —m m Mouth tentacles or arms ; the prolongation of the angles of the mouth. — tt M;irgiual tentacles. It appears thus, that, wheth- er originathig from Hydroids or not, all genuine Gymnoph- thalmata, the Diycophora? Cryp- tocarptB of Eschscholtz, must be united into one great natu- ral division with all the genu- ine Hydroids, whether these produce free Medusae or not. But, while I acknowledge that the free Medusaj born
. Contributions to the natural history of the United States of America. Zoology; Chelonia (Genus); Ctenophora; Cnidaria; Animals. Pelagia cyasella, Per. and LeS. ! a Umbrella. —m m Mouth tentacles or arms ; the prolongation of the angles of the mouth. — tt M;irgiual tentacles. It appears thus, that, wheth- er originathig from Hydroids or not, all genuine Gymnoph- thalmata, the Diycophora? Cryp- tocarptB of Eschscholtz, must be united into one great natu- ral division with all the genu- ine Hydroids, whether these produce free Medusae or not. But, while I acknowledge that the free Medusaj born from Hydroids show their Acalephian. Hybocodon prolifeb, Ag. '. stem of a single Hydra. — o Its mouth sur- rounded with tentacles. — / / Its marginal tentacles. — d dd The most advanced of its Medusae Fig. G5. Fin. CO. Fig. 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 Agassiz, Louis, 1807-1873. Boston, Little, Brown and Company; London, Trübner & Co.
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Keywords: ., bookcentury1800, bookdeca, booksubjectanimals, booksubjectzoology
