. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 98 ECHINOIDEA. II. the vertex being at the end of the posterior petals. The sides of the test are almost 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 mainly the same; only in the specimen of 3mm length the posterior end is yet rather sloping, the anal opening being very near the apical
. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 98 ECHINOIDEA. II. the vertex being at the end of the posterior petals. The sides of the test are almost 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 mainly the same; only in the specimen of 3mm 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 younger specimens the peristome and mouth is as yet quite embryonal, the labrum not prominent at all; in the specimen of 3mm the peristome is. 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
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscientificexpedition
