. Seaside studies in natural history. Marine animals. 74 MARINE ANIMALS OF MASSACHUSETTS BAY. into points of a conical or cylindrical shape. This polymorphism among the Tubularians is another evidence of the relation be- tween the Siphonophorse, or floating Hydroids, and the fixqd Hydroids. Byhocodon. (Hybocodon proUfer Ag.) Among our Medusse derived from a Tubularian stock is the Hybocodon, viz. the hunchbacked Medusa (Fig. 102), a singular little Jelly-fish, odd and unsymmetrical in shape, as its name indicates, and interesting from its relations to one of our floating communities, the Nanom
. Seaside studies in natural history. Marine animals. 74 MARINE ANIMALS OF MASSACHUSETTS BAY. into points of a conical or cylindrical shape. This polymorphism among the Tubularians is another evidence of the relation be- tween the Siphonophorse, or floating Hydroids, and the fixqd Hydroids. Byhocodon. (Hybocodon proUfer Ag.) Among our Medusse derived from a Tubularian stock is the Hybocodon, viz. the hunchbacked Medusa (Fig. 102), a singular little Jelly-fish, odd and unsymmetrical in shape, as its name indicates, and interesting from its relations to one of our floating communities, the Nanomia, presently to be described. Instead of the evenly proportioned bell of the ordinary Medusae, the Hybocodon has a one-sided outline (Mg. 102), one large tentacle only being fully developed, while the others remain always abor- tive, so that the whole weight of the structure is thrown on one half of the bell. Upon this large tentacle small Jelly-fishes, similar to the original, are produced by budding, this process Fig. 102. Fig. 103. 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, Elizabeth Cabot Cary, 1822-1907; Agassiz, Alexander, 1835-1910, joint author. Boston, J. R. Osgood and Company
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