Archive image from page 72 of The Danish Ingolf-expedition (1898). The Danish Ingolf-expedition danishingolfexpe1517dani Year: 1898 Fig. XXXII. Nemertesia ramosa juv. a. Young colony from 'Ingolf' St. 55 (nat size), b. hydrocladial internode from the same colony (X80). c. apophyse from the same colony (X So), d. colony from 'Ingolf' St. 85 (nat. size', e. apo- 6 physe from the colony from St. 85 (X So). features of considerable interest. The distal part of its ramifications exhibits the same structure as Nemertesia antennina, having, inside the homogeneous peridermal chitinoussheath, coenosar
Archive image from page 72 of The Danish Ingolf-expedition (1898). The Danish Ingolf-expedition danishingolfexpe1517dani Year: 1898 Fig. XXXII. Nemertesia ramosa juv. a. Young colony from 'Ingolf' St. 55 (nat size), b. hydrocladial internode from the same colony (X80). c. apophyse from the same colony (X So), d. colony from 'Ingolf' St. 85 (nat. size', e. apo- 6 physe from the colony from St. 85 (X So). features of considerable interest. The distal part of its ramifications exhibits the same structure as Nemertesia antennina, having, inside the homogeneous peridermal chitinoussheath, coenosarc strings; these parts of the stem are thus canaliculate. Farther down, however, we find secondary tubes closely arranged about the primary stem tube, and the nearer we come to the base, the closer is the network and the thicker the stem. Where these secondary tubes occur, they cover the apophyses more and more, finally burying them altogether, while the hydroeladia here also fall away. Consequently, the basal part of well-developed colonies of Nemertesia ramosa lacks hydroeladia, whereby the colony assumes a highly peculiar appearance. At a couple of the 'Ingolf' stations, some quite small colonies of Nemertesia ramosa were found; these serve well to show the difficulty of distinguishing the young stages from Plumularia (fig. XXXII). The smallest colony (a) is altogether pinnate; the thin stem is divided into irregular internodia with a varying number of apophyses, but closer investigation shows that the apophyses do not form two regular longitudinal rows, being as a matter of fact alternately somewhat displaced to one side or the other, so that we have here a slight approach to quadriserial arrangement. A some- what larger colony (</), where the stem is slightly thicker, reveals more clearly the displacement of
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Keywords: 1890, 1898, archive, book, bookauthor, bookdecade, bookpublisher, booksponsor, booksubject, bookyear, copenhagen_h_hagerup, danish_ingolf_expedition_1895_1896, drawing, historical, history, hydrography, illustration, image, ingolf_ship_, marine_animals, page, picture, print, reference, scientific_expeditions, smithsonian_libraries, vintage, wandel_c_f_carl_frederik_1843_1930, zimmermann_a_albrecht_b_1860
