. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. Fig. 122 Fig. 123 Textfigs. 122—124. Acthelmis schauditmii. Fig. 122: Transverse section of pennon in the lower part of the actinopharynx. Fig. 123; \ similar sec- tion in the reproductive tract. Fig. 124: Transverse section of a mesentery of the second cj-cle. stinalis. The folds are liigh and rather richly ramificated. A transverse-section of a pennon in the lower region of the actinopharynx of the specimen from Great fiord is reproduced in the textfig. 122. (The side of the actinopharynx is turned upwards). In the tract o
. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. Fig. 122 Fig. 123 Textfigs. 122—124. Acthelmis schauditmii. Fig. 122: Transverse section of pennon in the lower part of the actinopharynx. Fig. 123; \ similar sec- tion in the reproductive tract. Fig. 124: Transverse section of a mesentery of the second cj-cle. stinalis. The folds are liigh and rather richly ramificated. A transverse-section of a pennon in the lower region of the actinopharynx of the specimen from Great fiord is reproduced in the textfig. 122. (The side of the actinopharynx is turned upwards). In the tract of the reproductive organs the folds are very high and partly much ramificated (textfig. 123, transverse-sections of the specimen from Great fiord). The parietal muscles are weak, the folds are thick, few and low, and recall those of the muscles of the mesenteries of the second cycle, though the folds are stronger here. The niesogloea is strongly developed in the parietal muscle-tract as well as in the mesenteries of the second order, wherefore these part in transverse-sections are of a more robust appearance than the corresponding tracts of A. intestinalis. (The textfigure 124 shows a transverse- section through a mesentery of the second order of a specimen from New-Zembla). The parietal muscles seem to be sparsely spread over the column. Stomata are probably present in the distal part of the mesen- teries. Only the first six pairs of mesenteries bear reproductive organs. The specimen is dioecious. Remarks: The state of preservation of the specimens was not good, wherefore the description is. 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 Ingolf (Cruiser); Danish Ingolf-Expedition (1895-1896). Copenhagen : H. Hagerup
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscienti, bookyear1921
