. Contributions to Canadian biology. Marine biology; Natural history. 150 DEPARTMEyT OF THE yiVAL SERVICE Family TUBULARID.^. Trophosome. Sttnn unbranched or irregTilarly branched; perisarc definite; hydranths witli a distal and a proximal set of filiform tentacles. Gonosome. Gonophores producing actinulse. Genus Tubularia. Trophosome. Stem unbranched or irregularly branched; proximal set of ten- tacles longer than the distal set, each set in one whorl. Gonosome. Gonophores in clusters, attached by means of stalked peduncles to the body of the hydranth just distal to the proximal tentacles; fe
. Contributions to Canadian biology. Marine biology; Natural history. 150 DEPARTMEyT OF THE yiVAL SERVICE Family TUBULARID.^. Trophosome. Sttnn unbranched or irregTilarly branched; perisarc definite; hydranths witli a distal and a proximal set of filiform tentacles. Gonosome. Gonophores producing actinulse. Genus Tubularia. Trophosome. Stem unbranched or irregularly branched; proximal set of ten- tacles longer than the distal set, each set in one whorl. Gonosome. Gonophores in clusters, attached by means of stalked peduncles to the body of the hydranth just distal to the proximal tentacles; female gonophores producing actinulfe. KEY TO SPECIES. a Perisarc extensively annulated. aa Perisarc not extensively annulated. b Stems unbranched c Stems jointed. cc Stems not jointed. T. larynx. T. couth oiiyu T. indivisa. hh Stem irr^ularly branched. d Medusoids with laterally compressed apical processes. T. crocea, dd IMedusoids with conical apical processes, e Hydranths large T. specfahilis. ee Hydranths small. ' T. tenella. Tubularia couthouyi Agassiz. Trophosome. Stem unbranched, height 15 cm.; deep annulations at intervals dividing the stem; hydranth large, 3 or 4 cm. in dia- meter when tentacles are extended; proximal tentacles 30-40, long; distal up to 50, shorter and smaller. Gonosome. Gonophores growing in dense racemes; sporosacs with 4 radial canals but without apical No. 21. Tubularia 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 Biological Board of Canada; Canada. Marine Biological Station. Toronto, Biological Board of Canada
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