. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. 8o HYDROIDA H. zoo rn. 6 CO m. looom. 2000 m. Fig. XLI. Finds of Ag/aopkenopsis cornuta in the Northern Atlantic. sarcothecas, which, however, are here generally somewhat smaller than on the hydrocladia. The gono- theca has a well developed npper lip, which does not appear clearly from Nutting's illustration and description. It is domed strongly forward, .so that the aperture becomes turned down towards the base. Aglaophenopsis corintta is a t\pical deep-sea species which has only in Davis
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. 8o HYDROIDA H. zoo rn. 6 CO m. looom. 2000 m. Fig. XLI. Finds of Ag/aopkenopsis cornuta in the Northern Atlantic. sarcothecas, which, however, are here generally somewhat smaller than on the hydrocladia. The gono- theca has a well developed npper lip, which does not appear clearly from Nutting's illustration and description. It is domed strongly forward, .so that the aperture becomes turned down towards the base. Aglaophenopsis corintta is a t\pical deep-sea species which has only in Davis Strait been observed at loo, and in Danmark Strait at 138 fathoms depth; it can thus also penetrate up into the lower part of the littoral region. The species probably belongs stricth- speaking to the warm, deep northern part of the Atlantic; it moves up into Davis vStrait, where it appears to be of not infrequent occurrence (fig. XLIi and has now, as we see, also been recorded from Danmark Strait. As it is not known from other localities than those mentioned and the waters off Nova Scotia, we are justified in characterising it for the present as a west atlantic species. Aglaophenopsis (?) pharetra n. sp. The colony pinnate with polysiphonic stem, monosiphonic in the extreme portions, and having the primary tube indistinctly segmented. Each of the internodia of the stem bears at two thirds of its height a well defined, fairly short apopluse, and three unpaired sarcothecte, two in the median line below the apophyse, and the third in the corner between the stem and the apophyse above the origin of the latter. The alternately placed hydrocladia form almost a right angle with the stem; they are divided into long internodia, each of which bears a hvdrotheca, and three sarcothecpe, a supracalycinc pair at the opening of the hydrotheca and an unpaired proximal about midway between the base of the hydrotheca and the proximal end of the internodium; the opening margin of the. Please no
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Keywords: ., bookcentury1800, bookdecade1890, booksu, booksubjectarcticregions
