. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. Fig. 60. Fig. 61. 57—61. Edwardsia vitrea. Transverse section of parietal muscles. Fig. 57: young specimen from Wijde Bay, fig. 58 specimen from Franz Joseph Fiord, fig. 59 specimen from Great Island, fig. 60 specimen from Great Fiord, fig. 61 type-specimen. more or less trianguloid. For comparing purposes I have reproduced the parietal muscles of five specimens. Especially the muscles reproduced in the figs. 58,60, and sectioned in the upper part of the reproductive region, do very well agree. The distribution of


. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. Fig. 60. Fig. 61. 57—61. Edwardsia vitrea. Transverse section of parietal muscles. Fig. 57: young specimen from Wijde Bay, fig. 58 specimen from Franz Joseph Fiord, fig. 59 specimen from Great Island, fig. 60 specimen from Great Fiord, fig. 61 type-specimen. more or less trianguloid. For comparing purposes I have reproduced the parietal muscles of five specimens. Especially the muscles reproduced in the figs. 58,60, and sectioned in the upper part of the reproductive region, do very well agree. The distribution of the parietal muscles on the column is the ordinary one. The ciliated tracts are of usual appearance. The type-specimen as well as the other examined specimens were females. I cannot confirm Danielssen's statement that the species is monoecious. Also in other respects Daniels- sen's 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