. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. Fig. 46. Fig- 47- Fig. 48. Textfigs. 46—48. Edwardia islandica. Transverse section of pennon (fig. 46) and parietal muscles (figs. 47, 48) in the upper part of the reproductive tract. Edwardsia incerta n. sp. Diagnosis: Physa well-developed. Scapus with a thick ectoderm, incrusted with foreign bodies, with scattered, large nemathybomes, containing a few nematocysts 29—^J X 5 /i in size. Tentacles not more than 16, probably 12. Nematocysts of the tentacles 22—26 x 2 fx, the spirocysts 14—22 n in size. Longitudinal muscle penn
. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. Fig. 46. Fig- 47- Fig. 48. Textfigs. 46—48. Edwardia islandica. Transverse section of pennon (fig. 46) and parietal muscles (figs. 47, 48) in the upper part of the reproductive tract. Edwardsia incerta n. sp. Diagnosis: Physa well-developed. Scapus with a thick ectoderm, incrusted with foreign bodies, with scattered, large nemathybomes, containing a few nematocysts 29—^J X 5 /i in size. Tentacles not more than 16, probably 12. Nematocysts of the tentacles 22—26 x 2 fx, the spirocysts 14—22 n in size. Longitudinal muscle pennons of the mesenteries in transverse-sections with some few, about 12 folds, only ramificated in the outer parts. The lamellar outer part of the mesenteries attached close by the outside of the pennons. Parietal muscles comparatively well-deve- loped, in transverse-sections fan-shaped, considerably broader than in E. arctica. The parietal muscles are considerably expanded on the column. Colour in alcohol: Scapus dirty grey. Dimensions in contracted state: length cm, breadth o. 15 cm. Occurrence: East-Greenland 72°28' N. 2i°48' W. 180 m mud with some stones (Sw. Greenland-Exp. 1899) i sp. The muscle pennons of the mesenteries of these species recall those of E. arctica; the nematocysts of the nemathybomes, however, differ in size. On account of the imperfect and badly preserved material I cannot give any minute description of the species. A transverse-section of a nmscle pennon. 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
Size: 1488px × 1679px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectscienti, bookyear1921
