. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. ACTINIARTA 55 it supports my suggestion that thi.' basitrichs of the Anthozoa have arisen from hoplotelic microbasic 6-niastigophors (see Carl- GREN 1940 p. 54, 55). Remarks: Possibly Sm/artia ."^pleiidoif: Dan. is identical with this species but, as the type of S. xplendens is lost, it is difficult to decide. Therefore I prefer to regard the specimens above descril)ed as a new species. Amphianthiis mopseae (Dan.). Stelididctis iiiopseac n. sp. ISitd p. 17 PI. 2 figs. 4,
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. ACTINIARTA 55 it supports my suggestion that thi.' basitrichs of the Anthozoa have arisen from hoplotelic microbasic 6-niastigophors (see Carl- GREN 1940 p. 54, 55). Remarks: Possibly Sm/artia ."^pleiidoif: Dan. is identical with this species but, as the type of S. xplendens is lost, it is difficult to decide. Therefore I prefer to regard the specimens above descril)ed as a new species. Amphianthiis mopseae (Dan.). Stelididctis iiiopseac n. sp. ISitd p. 17 PI. 2 figs. 4, 5, PI. 8 figs. 7-11. ">. Stelidiactis tuhuJariae n. sp. 1S".((i p. 1!) PI. 2 figs. 6-7, PL S fit,. 12. Diagnosis: Pedal disc prolonged in the directive plane (always?) clasping the stalk of Mopsea or Tubularia. Column provided with 24 ridges (teste Daxielssen) without tubercles. Ciuclides at least 2 from the directive compartments. Sphincter rather strong, alveolar, not .stratifieil, not occupving the whole breadth of the mesogloea. Tentacles up to about 48, not thickened on their outside, short, conical. More than 6 pairs of perfect. Two sijthunoglyphs (always?). Mesenteries at the limbus more numerous than those at the margin. Retractors of the mesen- teries, parietobasilar, and basilar muscles weak. All stronger mesen- teries, including the directives, fertile. of the tentacles about basitrichs, those of the actinopharynx 19-21 (24) X to 31 ;< Colour: Column mother-of-pearl coloured, tinged faintlv with rose red. Oral disc .salmon red with somewhat darker ravs issuing from the mouth. Tentacles a little liyhter in cohiur than the oral disc (Daxielssen, Stelidiactis ). Column as tlie former. Tentacles .somewhat darker red with a bright red annulus round the base (Daxielssex Stelidiactis tulmhiride). Dimensions in contracted state: height cm, breadth of the about x , in
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Keywords: ., bookcentury1800, bookdecade1890, booksu, booksubjectarcticregions
