Archive image from page 401 of The Danish Ingolf-expedition (1899-1953). The Danish Ingolf-expedition danishingolfex4apt1a2daniuoft Year: 1899-1953 98 ECHINOIDEA. II. the vertex being at the end of the posterior petals. The sides of the test are ahnost vertical, the actinal side almost flat. The periproct is situated near the abactinal side, in a slight furrow. The ambulacra are very little deepened. — The young specimens are somewhat more egg-shaped, but the posterior end is high as in the larger specimens, the outline in profil being mainl\- the same; only in the specimen of 3'''' length t
Archive image from page 401 of The Danish Ingolf-expedition (1899-1953). The Danish Ingolf-expedition danishingolfex4apt1a2daniuoft Year: 1899-1953 98 ECHINOIDEA. II. the vertex being at the end of the posterior petals. The sides of the test are ahnost vertical, the actinal side almost flat. The periproct is situated near the abactinal side, in a slight furrow. The ambulacra are very little deepened. — The young specimens are somewhat more egg-shaped, but the posterior end is high as in the larger specimens, the outline in profil being mainl\- the same; only in the specimen of 3'''' length the posterior end is yet rather sloping, the anal opening being very near the apical system. To give a detailed description of the structure of the test would be superfluous after the elaborate analysis and figures given by Loven, only a few additional remarks can be given on account of the larger material at disposal. — In the >ounger specimens the peristome and mouth is as yet quite embryonal, the labrum not prominent at all; in the specimen of 3™™ the peristome is
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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
