. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. Fig. 2j.—Obetia QCniculata (Linnaeus). Obelia hyalina Clarke. Obelia hyalina Clarke, Bull. Mus. Comp. Zool., Harvard. 1879, p. 241. Trophosome.—Colony small usually from 15 to 20 ram. in height; some colonies scarcely branched, others of about the same height with several branches; stem distinctly geniculate with several annula- tions above the origin of each branch and pedicel; branches sometimes coming from the axil of a pedicel and sometimes taking the place of pedicels; pedicels eith
. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. Fig. 2j.—Obetia QCniculata (Linnaeus). Obelia hyalina Clarke. Obelia hyalina Clarke, Bull. Mus. Comp. Zool., Harvard. 1879, p. 241. Trophosome.—Colony small usually from 15 to 20 ram. in height; some colonies scarcely branched, others of about the same height with several branches; stem distinctly geniculate with several annula- tions above the origin of each branch and pedicel; branches sometimes coming from the axil of a pedicel and sometimes taking the place of pedicels; pedicels either short and annu- lated throughout or longer and annulated at each extremity; hydrothecse cam- panulatc, depth and width nearly equal; sometimes there is a tendency to flaring of the margin; margin entire. Gonosome.—Gonophores borne in the axils of the pedicels; gonangiaoval but slightly tapering at the base; distal end either rounded or provided with a distinct collar; length of the gonangium from two to four times the length of tlie hydrotheca. Distribution.—Common on sargassum collected off Bogue Bank, but found also growing on tunicates, growing on the piles at Marshallberg and on sponge dredged by the Fish Hawk. Congdon found some specimens in the Bermudas which he considered to be Obelia hyalina ; Hargitt later found specimens on floating sargassum at Woods Hole which he considered to be the same species as Congdon's specimens, but he did not agree with Congdon that it was O. He called his species O. congdoni. Clarke says that in O. hyalina "the gonangia are small, about twice the length of the hydrothecEc, rounded off at the distal end, with a simple, spherical, terminal opening which stretches across the distal end," and that the "colony is about 12 mm. in height and but little branched," while in Hargitt's specimens "the gonangia ;ire large, about four times the length of the hydrothecse, and the opening is not si
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