Archive image from page 400 of The Danish Ingolf-expedition (1899-1953). The Danish Ingolf-expedition danishingolfex5apt1a4daniuoft Year: 1899-1953 ZOANTHARIA 13 Or In the mesenteries of a few specimens taken at vSt. 129 by the Ingolf-Expedition I foimd numerous egg-shaped neniatocysts, sometimes large (length 19 —24/i, breadth 14—17/), sometimes smaller (length 17//, breadth 7/i) and also some intermediate sizes. As these only occurred, however, in a few colonies and were wanting in others from the same locality, the doubt arose whether tliese capsules were of normal occurrence. Sections sh
Archive image from page 400 of The Danish Ingolf-expedition (1899-1953). The Danish Ingolf-expedition danishingolfex5apt1a4daniuoft Year: 1899-1953 ZOANTHARIA 13 Or In the mesenteries of a few specimens taken at vSt. 129 by the Ingolf-Expedition I foimd numerous egg-shaped neniatocysts, sometimes large (length 19 —24/i, breadth 14—17/), sometimes smaller (length 17//, breadth 7/i) and also some intermediate sizes. As these only occurred, however, in a few colonies and were wanting in others from the same locality, the doubt arose whether tliese capsules were of normal occurrence. Sections showed also, that the capsules did not lie in the cnido-glandular tract itself but in the ectoderm immediately within this. It is therefore most probable, that these neniatocysts have been taken in with the food and that they are the neniatocysts of hydroids, which they greatly resemble. The species is dioecious. The walls of the carciiin-ciuiii have the same structure as the body-wall of the polyps. The ectoderm is provided with a thin cuticle and contains neniatocysts of the same kind as in the body-wall, which are especially num- erous on the outer side of the carcinoecium. The ectoderm seems to be somewhat thinner on the inner than on the outer side and is by comparison with the niesoglcjea very thin. The mesoglcea resembles the body-wall mesogloea of the polyps and is very much incrusted. The canal-system (c text-fig. i) of the entoderm is 3 greatly developed and lies almost halfway be- tween the outer and inner margins of the car- Xext-figure 1—3. Transverse section tlirougU the free margin „, 1 1 A \ A .,A (outer lip) of the carcin(tciuui of Epizoanthiis incrustalus (fig. l), cincecium. The canals are large and broad and P) . _ pauHp/uius (fig. 3 The fuse together to irregular lacunae, which form and partly also the ectoderm are seen but not the epithelium in the canal-system, c canals; cc marginal canal, a network. The mesoglceal pillars between the m
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Keywords: 1890, 1899-1953, archive, arctic_regions, book, bookauthor, bookdecade, bookpublisher, booksubject, bookyear, copenhagen_h_hagerup, danish_ingolf_expedition_1895_1896_, drawing, historical, history, illustration, image, k_benhavns_universitet_zoologisk_museum, marine_animals_arctic_regions, page, picture, print, reference, scientific_expeditions, vintage
