Archive image from page 46 of The Danish Ingolf-expedition (1899-1953). The Danish Ingolf-expedition danishingolfex5dpt12daniuoft Year: 1899-1953 Figs. 44. Ai-tiniiiiifr hiHijironiiif. Transverse sections of a tentacle (fig. 44) and a perfect mesentery (fig. 45) in the region of the aetino- pharynx. Inner part of the mesentery not figured. cuticle, if present, is weak. In the contracted state of the animal the .scapulus is furnished with numerous longitudinal furrows and alternately broader and smaller ridges, the number of the ridges .seems to corrcsjiond to the number of tentacles, as
Archive image from page 46 of The Danish Ingolf-expedition (1899-1953). The Danish Ingolf-expedition danishingolfex5dpt12daniuoft Year: 1899-1953 Figs. 44. Ai-tiniiiiifr hiHijironiiif. Transverse sections of a tentacle (fig. 44) and a perfect mesentery (fig. 45) in the region of the aetino- pharynx. Inner part of the mesentery not figured. cuticle, if present, is weak. In the contracted state of the animal the .scapulus is furnished with numerous longitudinal furrows and alternately broader and smaller ridges, the number of the ridges .seems to corrcsjiond to the number of tentacles, as each ridge ends at the base of a tentacle. Thus the margin is not distinct. The tentacles are acute, and in the expanded state long (teste ), in the contracted .state of ordinarv length, the inner are longer and broader than the outer ones. The ca])itular ridges, especiallv the larger ones, end with tliickeiiings at the base of the tentacles, the latter are bulbous swollen at the outside of the base. These swellings are distinct in the inner tentacles. The number of tentacles seems to correspond to that of the mesenteries, ami is 96. In Verrill's figure 1 PI. .o () the last cycle is not indi- cated. They are probably arranged. Thr inner half of the oral disc is radially furrowecj and lacks tentacles, .\ccording to Yerrill the oral disc 'can cxipund verv broaiUv'. The actino- pharynx is long and j)rovide(l with I'veral hmgitudinal furrows and ridges, in the contracted state also furrowed. The 2 siphonoglyphs, .symmetrically situated, are broad and aborally [)rolongated. -Anatomical descri]ition: The of the column is thick and contains cells poor in protoplasm, the sphincter verv â strong and sejiarated from the weak endodernial muscles by a considerable mesogloea-layer. The meshes are arranged in groups, elongated and .sejjaratcd from each other by thicker l)alks of mesogloea. Therefore the sphinc
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Keywords: 1890, 1899-1953, archive, arctic_regions, book, bookauthor, bookdecade, bookpublisher, booksponsor, 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, university_of_toronto, vintage, zimmermann_a_albrecht_b_1860
