Archive image from page 42 of The Danish Ingolf-expedition (1899-1953). The Danish Ingolf-expedition danishingolfex5dpt12daniuoft Year: 1899-1953 ACTINIARIA 33 exaiuiiu'il (from Sr. 7S). I rounted liiTc .'i'.l tciitMclcs in tlii' ono hair, possibly there were a few more as some tentacles were very small. About half of the oral disc is devoid of tentacles. The oral disc is radially furroweil at the insertions of the mesenteries, the actino|)harvnx is of ordiriarv leni;th and provided with 2 distinct siplionojiKphs s\irinietricall\' situated and devoid of aboral prnlmmat ions. Anatomical de
Archive image from page 42 of The Danish Ingolf-expedition (1899-1953). The Danish Ingolf-expedition danishingolfex5dpt12daniuoft Year: 1899-1953 ACTINIARIA 33 exaiuiiu'il (from Sr. 7S). I rounted liiTc .'i'.l tciitMclcs in tlii' ono hair, possibly there were a few more as some tentacles were very small. About half of the oral disc is devoid of tentacles. The oral disc is radially furroweil at the insertions of the mesenteries, the actino|)harvnx is of ordiriarv leni;th and provided with 2 distinct siplionojiKphs s\irinietricall\' situated and devoid of aboral prnlmmat ions. Anatomical description: The ectoilerm of the jjedal disc and column is rather thin, that of the scapulas contains numerous The of the column is thick and provided numerous cells poor in ])roto])lasm. The circular Fig. 3t>. ChundroiiJtfUui coio)iiilii. Ldwer half ot the sphincter. nematocvsts. with rather muscles of the column are weak, on the other hand the sjihinctcr (li. 3S) is very well developed and alveolar, in the middle rejion with a little tendency to be reticular. The meshes arc large, esjiecially in the up])er jiart of the sphincter. The ectoderm of the tentacles is higher than the mesogloea and contains numerous spirocysts but more sparse nematocvsts, es])ecially in the specimens from St. 78 and 90. In the specimens from St. 11 they were more numerous in the a])ex of the tentacles. The longitudinal nmscles of the tentacles are ectodermal with folds arranged like a palisade and often somewhat ramified. The radial muscles of the oral disc are also ectodermal, sometimes, l)ut not always, they are weaker at the insertions of the mesenteries. The ectoderm of the actinopharynx is somewhat thicker than that of the scapus and provided w ith numerous nematocvsts. The of the actinopharynx is of ordinary thickness. The sizes of the nematocvsts (n) and spirocvsts in the dilTercnt regions of the body were the following: ,, , ., , scapulus I
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Keywords: 1890, 1899-1953, archive, arctic_regions, book, bookauthor, bookdecade, bookpublisher, booksubject, bookyear, copenhagen_h_hagerup, danish_ingolf_expedition_1895_1896_, drawing, historical, history, illustration, image, k_benhavns_universitet_zoologisk_museum, marine_animals_arctic_regions, page, picture, print, reference, scientific_expeditions, vintage
