Archive image from page 81 of The Danish Ingolf-expedition (1899-1953). The Danish Ingolf-expedition danishingolfex5cpt9daniuoft Year: 1899-1953 68 ACTINIARIA The proximal part is rounded and fusing into the middle without distinct outline. No distinct pliysa is present. The scapus is provided with a sometimes thin, sometimes thick, but translucent, often irregularly wrinkled cuticle, to the outside of which small grains and a great number of detritus-particles are attached. Under low magnifying powers small papilliform elevations are to be seen, which are, however, not regularly arranged, th
Archive image from page 81 of The Danish Ingolf-expedition (1899-1953). The Danish Ingolf-expedition danishingolfex5cpt9daniuoft Year: 1899-1953 68 ACTINIARIA The proximal part is rounded and fusing into the middle without distinct outline. No distinct pliysa is present. The scapus is provided with a sometimes thin, sometimes thick, but translucent, often irregularly wrinkled cuticle, to the outside of which small grains and a great number of detritus-particles are attached. Under low magnifying powers small papilliform elevations are to be seen, which are, however, not regularly arranged, thej' are as yet only thickenings of the ectoderm as may easily be ascertained on sections (text- fig. 83). The capitulum is short, not thickened between the insertions of the mesenteries. The tentacles are 12 in number, probably arranged in two cycles; the oral disc is inconsiderable. The actinopharynx is short and furnished with 8 longitudinal ridges. Whether a ventral siphonoglyphe is present or not I cannot decide with certainty. Anatomical descrip- tion: The scapus-ectoderm is as a rule not high, here and there it is, how- ever, tliickened, cushion- like. In these thickenings the nematocysts are accu- mulated (textfig. 83 11). They are, however, not numerous, liut the groups still must le regarded as weak batteries of nemato- cysts. The size of the ne- matocysts is 29—36 X 3,5 —3 //. The scapus is cove- red with a folded cuticle, now thin, now thick. If the Fig- 83-
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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, msn, page, picture, print, reference, scientific_expeditions, vintage, zimmermann_a_albrecht_b_1860
