. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. ACTINIARIA 103. Textfig. 128—133. Peachia hastata. Transverse sections of pennons ot perfect me- senteries in the repro- ductive tract (fig. 128, 130, 131) and in the cnido-glandular tract (fig. 129). In the figure 130 also an imperfect mesentery is reproduced (to the right). The pen- non in fig. 130 is from a ventral directive; the pennon reproduced in fig. 131 is from the same section as the mesen- tery in fig. 130. Figs. 132, 133. Transversal section of the aboral prolongation of the si- phonoglyphe, fig. 132 in the upper
. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. ACTINIARIA 103. Textfig. 128—133. Peachia hastata. Transverse sections of pennons ot perfect me- senteries in the repro- ductive tract (fig. 128, 130, 131) and in the cnido-glandular tract (fig. 129). In the figure 130 also an imperfect mesentery is reproduced (to the right). The pen- non in fig. 130 is from a ventral directive; the pennon reproduced in fig. 131 is from the same section as the mesen- tery in fig. 130. Figs. 132, 133. Transversal section of the aboral prolongation of the si- phonoglyphe, fig. 132 in the upper, fig. 133 in the lower part. Both sections drawn under the same magnification a boun- dary zone chn ventral directives. Fig- 131 Fig- 133 Fig. 132 of very variable appearance. In the textfigure 130, a directive mesenterium and a mesenterium of the second cycle are sketched in the reproductive region, the text figure 128 shows a transverse-section of a perfect mesenterium in the vicinity of the sections reproduced above, and the textfigure 129 a perfect mesenterium in the region of the glandular tract (the last section has been taken from another individium having no reproduc- tive organs). Commonly the inner part of the pennons is more ramificated than the outer part. The lon- gitudinal pennons and the parietal muscles fuse together without distinct hmits. The part of the parietal muscles on the opposite side of the pennons is weak, distinctly definite, with the strongest folds on the inside. The mesenteries of the second cycle have produced small pennon-like formations, close to the insertions of the mesenteries. The inner parts of these formations are curved towards the exocoels, the parietal muscles are not particularly differentiated here. The parietal muscles are not spread over 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
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscienti, bookyear1921
