. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. HYDROIDS OF BEAUFORT, NORTH CAROLINA. Family PE.\NARID.€. 355 Trophosome.—Colony branched; hydranths with a proximal whorl of long filiform tentacles around the body of the hydranth and several capitate tentacles on the proboscis, these usually in a series of whorls. Gonosome.—Gonophores producing free medusse with four radial canals and four rudimentary tentacles. Genus PENNARU. Trophosome.—Colony large, much branched, often with a distinct pinnate or twice pinnate arrange- ment; hydran
. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. HYDROIDS OF BEAUFORT, NORTH CAROLINA. Family PE.\NARID.€. 355 Trophosome.—Colony branched; hydranths with a proximal whorl of long filiform tentacles around the body of the hydranth and several capitate tentacles on the proboscis, these usually in a series of whorls. Gonosome.—Gonophores producing free medusse with four radial canals and four rudimentary tentacles. Genus PENNARU. Trophosome.—Colony large, much branched, often with a distinct pinnate or twice pinnate arrange- ment; hydranth with a large proboscis, very noticeable when extended, well supplied with whorls of capitate tentacles. Gonosome. —Gonophores borne on the hydranth body just distal to the proximal whorl of tentacles; medusEe very large, often mature, when liberated. They may even liberate the sex products before being set free from the hydranth. Pennaria tiarella McCrady. Pennarta tiarella McCrady. Gymnoph. of Charleston Har., i8s7, p. SI. Hareitt. American Naturalist, 1900, p. 387. Hargitt, American Naturalist, 1901, p. 311. Nutting. Hydroids of the Woods Hole Region, 1901, p. 337. Trophosome.—Colony large, sometimes reach- ing the height of 6 inches; branching twice pin- nate. A varying number of annulations, never very many, occur on the main stem above the origin of the branch and on the branches above their origin. The hydranths are large, narrowing distinctly to form the proboscis. There are 10 or 12 filiform tentacles and a varj-ing number of capitate tenta- cles which are usually arranged in four or five quite regular whorls in the fully developed hy- dranth. Often a hydranth bud appears growing directly from the wall of the main stem or branch. Gonosome.—Gonophores few in number; when there are more than one on a hydranth at the same time they seldom are at the same stage of development. The medusse are oval or ovate; rudimentarj' tentacles, radial canals, and the man
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