. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. 64 ACTINIARIA Anatomical description: The ectoderm of the scapus is high, thicker than the mesogloea and contains nematocysts, 29—34 (37) X 7—8 fx in size, often somewhat curved, and large, ver>' numerous gland-cells. The nematocysts are packed together in greater and smaller groups; there are, however, also a few nematocysts between the groups. The ectoderm of the capitulum is in the longitudinal ridges very high (textfig. 79), a Uttle thicker than the mesogloea, but in the furrows thi
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. 64 ACTINIARIA Anatomical description: The ectoderm of the scapus is high, thicker than the mesogloea and contains nematocysts, 29—34 (37) X 7—8 fx in size, often somewhat curved, and large, ver>' numerous gland-cells. The nematocysts are packed together in greater and smaller groups; there are, however, also a few nematocysts between the groups. The ectoderm of the capitulum is in the longitudinal ridges very high (textfig. 79), a Uttle thicker than the mesogloea, but in the furrows thinner. In the ectoderm of the ridges there are numerous nematocysts, 26—46 ji long and almost 7 fi broad, often a little cur\'ed, while the ecto- derm of the furrows does not contain any such. The mesogloea is thickened in the ridges. The ectoderm of the tentacles is provided with very numerous, smaller nema- tocysts (18—24 X 5 /i) and some few, a little larger (27 X 7 /i). The spirocysts are of variable ' size, the largest about 24^^ Fig. 76. IfTv^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Danish Ingolf-Expedition (1895-1896); Københavns universitet. Zoologisk museum. Copenhagen H. Hagerup
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Keywords: ., bookcentury1800, bookdecade1890, booksu, booksubjectarcticregions
