Archive image from page 405 of The Danish Ingolf-expedition (1899-1953). The Danish Ingolf-expedition danishingolfex4apt1a2daniuoft Year: 1899-1953 I02 ECHINOIDEA. II. area. The bathymetrical distribution from 220 (or 170, comp. below, //. A/cntzi) to 1700 fathoms (Talismans). Besides the species four more recent sjjecies of the genus Hcviiastcr {exc\.Ad(i//(s) liave been described, viz. Hemiaster gibhosiis A. Ag., zonatiis A. Ag. both from the «Challenger», //. A/cntzi A. Ag., from the «Blake , and //. florigcriis Studer, from the . (The Iloniasfcr apicahis Woods is refe
Archive image from page 405 of The Danish Ingolf-expedition (1899-1953). The Danish Ingolf-expedition danishingolfex4apt1a2daniuoft Year: 1899-1953 I02 ECHINOIDEA. II. area. The bathymetrical distribution from 220 (or 170, comp. below, //. A/cntzi) to 1700 fathoms (Talismans). Besides the species four more recent sjjecies of the genus Hcviiastcr {exc\.Ad(i//(s) liave been described, viz. Hemiaster gibhosiis A. Ag., zonatiis A. Ag. both from the «Challenger», //. A/cntzi A. Ag., from the «Blake , and //. florigcriis Studer, from the . (The Iloniasfcr apicahis Woods is referred by Woods himself to the subgenus Rhiiiobrissus and therefore, being no true Hemiaster, does not concern us here). As for the first and third of these .species it seems rather probable that they will prove to be synonyms only of //. cxpergitiis. In his description of Hemiaster gibbosus («Chall.»-Ech. , PI. XX. 5 â 16, 22) Agassiz does not point out by which features this species is distinguished from //. , and a careful analysis of his description and figures does not reveal any good distinguishing characters either. De Meijere («Siboga»-Ech. p. 182) has had some specimens of H. gibbosus, but he only remarks that he finds them answering well to the description given by Agassiz. Through the kindness of Professor M. Weber I have received one of these .specimens, 20''' in length; I have thus been able to compare the species with specimens of //. expergittis. and finally I have examined the v Challengers-specimens in the British Museum. The comparison of //. gibbosus and expcrgitus gives the following results. The shape of the test is the same; to be sure I have seen no specimen of expergitiis of tlie form shown in Fig. 6. PI. XX of the «Challenger-Echini, all the specimens being wider in front than behind, or (the small ones) almost elHptic. But Agassiz himself states that the outline is variable, and the outline of the spec
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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
