. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. Fig. 84. Parasicyonis ingolfi. .Scotinn (if a mesentery in the resion of the cni(liis;lan(liilar tract. i*^. finfJ'-f'-'^' r«jvr*?*' Fig. 83. I'nrnnicyonis ingolfi. Sphincter. pro\nded with on the outer sides of their ba-ws. The inner tentacles are somewhat larger than the outer ones. The tentacles are probably 72 in number and half as nu- merous as the Thev are probablv arranged as in Slomphta but the inner cycles are closely set, so that it seems as l
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. Fig. 84. Parasicyonis ingolfi. .Scotinn (if a mesentery in the resion of the cni(liis;lan(liilar tract. i*^. finfJ'-f'-'^' r«jvr*?*' Fig. 83. I'nrnnicyonis ingolfi. Sphincter. pro\nded with on the outer sides of their ba-ws. The inner tentacles are somewhat larger than the outer ones. The tentacles are probably 72 in number and half as nu- merous as the Thev are probablv arranged as in Slomphta but the inner cycles are closely set, so that it seems as lar. The ectoderm of the column is ])igmented, without a cuticle and rather high but many times thinner than the mesogloea. The mesogloea is thick, especially in the spliincter region, the fibrillao are extended in the inner parts of the mesogloea, in the outer thev cross each other, so that a basket-work of fibrillae arises. The end- odermal circular muscles of the column are weak, on the other hand the sphincter is strong and very broad, but diminishing rather abruptly, mainly reticular with the meshes drawn out in a radial direction. In its upper and outer i)arts the s])hincter shows a ten- dency to be alveolar and stratified (fig. f^3). The ectoderm of the tentacles is high and very folded, as also the mesogloea. The longitudinal are strong and meso- gloeal, the large muscle-meshes often drawn out in a radial direction (fig. •'^2). The radial muscles of the oral disc agree with the longi- tudinal muscles of the tentacles. The jiairs of mesenteries are probably 72 (6 -f 12 + 18 -f 36 = 72), the last 3fi of which are present only in the proximal part of the bodv, the other mesenteries reach the distal end. In about. 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 (1895-1
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Keywords: ., bookcentury1800, bookdecade1890, booksu, booksubjectarcticregions
