Archive image from page 80 of The Danish Ingolf-Expedition (1921). The Danish Ingolf-Expedition danishingolfexpe0509ingo Year: 1921 ACTINIARIA 73 scapus is quite smooth. The scapus is in fact provided with scattered '//a/ca;«/)a-papillae' to which small grains are sometimes attached in the proximal parts of the scapus (textfig. 87, PI. i, figs. 8, 9). The capitulum is polygonal and has 8 rather elevated longitudinal ridges between the insertions of the mesenteries. The tentacles of Lecytkia are (according to Sars) 20, 25—26 in number, those of carnea, according to Appellof, some 20 to some 30
Archive image from page 80 of The Danish Ingolf-Expedition (1921). The Danish Ingolf-Expedition danishingolfexpe0509ingo Year: 1921 ACTINIARIA 73 scapus is quite smooth. The scapus is in fact provided with scattered '//a/ca;«/)a-papillae' to which small grains are sometimes attached in the proximal parts of the scapus (textfig. 87, PI. i, figs. 8, 9). The capitulum is polygonal and has 8 rather elevated longitudinal ridges between the insertions of the mesenteries. The tentacles of Lecytkia are (according to Sars) 20, 25—26 in number, those of carnea, according to Appellof, some 20 to some 30. I have observed 24—28 tentacles myself. The inner tentacles are longer than the outer ones, all short and of about the length of the capitulum, conical and hexamerously arranged in at least 3 cycles. Appellof says that there are only 2 cycles of tentacles oral disc is actino- pharynx is short, with 8 longitudinal furrows and the same number of longitudinal ridges. A feebly developed ventral siphonoglyphe seems to be present. Anatomical description : The pln-sa is devoid of a periderm. The ectoderm contahis numerous nematocysts, 8—15 ,« long. The scapus-ectoderm is high and covered with a thin periderm. Its nematocysts are numerous and of two dimensions, partly comparatively broad 17—22 X 3,5—4//, partly smaller, thin- ner and about 8—12 /i long. The mesogloea is of about the thickness of the ectoderm or thinner and almost homogeneous. The endoderm is a Uttle lower than the ectoderm and contains numerous nemato- cysts (text fig. 89, 92 n), 34—38 X 5 n in size and often a httle cur- ved; these endodermal nematocysts make a characteristic feature of this species. I have obsers-ed such capsules also in the endoderm of the tentacles and of the actinopharjaix. (Their size is 36—43 X 5 /). The capitular ectoderm is high and provided with nematocysts which are smaller in the proximal parts (10—14/; long), in the distal part, .„„,
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Keywords: 1920, 1921, archive, arctic_ocean, book, bookauthor, bookdecade, bookpublisher, booksponsor, booksubject, bookyear, copenhagen_h_hagerup, danish_ingolf_expedition_1895_1896_, drawing, historical, history, illustration, image, ingolf_cruiser_, mblwhoi_library, page, picture, print, reference, scientific_expeditions, vintage, zimmermann_a_albrecht_b_1860
