. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. Fig. 156 Tcxtfigs. 155—158. Andwakia mirabilis. Fig. 155: Longitudinal .section of the upper part of the column and of the basis of a tentacle showing the me- sogloeal sphincter t: tentacle, ca: capitulum, c: cuticle. Fig. 156: Transverse section of a pennon in the lower part of the actinopharyux. Fig. 157: Transverse section of a perfect mesentery in the reproductive tract. Fig. 158: Transverse section of a mesentery of the second spirocysts. Its mesogloea is thick, especially at
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. Fig. 156 Tcxtfigs. 155—158. Andwakia mirabilis. Fig. 155: Longitudinal .section of the upper part of the column and of the basis of a tentacle showing the me- sogloeal sphincter t: tentacle, ca: capitulum, c: cuticle. Fig. 156: Transverse section of a pennon in the lower part of the actinopharyux. Fig. 157: Transverse section of a perfect mesentery in the reproductive tract. Fig. 158: Transverse section of a mesentery of the second spirocysts. Its mesogloea is thick, especially at the ridges. The endoderm of the column is somewhat thick, in the physa thinner than the ectoderm. The endodermal circular muscles are rather well developed and form short, palisade-shaped folds. The sphincter (textfig. 155) is mesogloeal and strong, elongated, about twice as long as the capitulum, not forming an offset, not stratified. The most distal part of the sphincter much recalls the sphincter of Halcampa. It is namely here divided in somewhat line meshes and is so much elongated that the longitudinal muscles of the tentacles cover the uppermost part of the sphincter. It is besides, as in Halcampa, rather close to the ectoderm. In the other, larger part of the sphincter, where the. 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
