. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. 40 CRUSTACEA V. Distribution. W. Norway from abt. 66° N. to abt. 6o°N.: Hardangerfjord; the Storeggen-bank, abt. 200 in., "on the skinned body of a newly shot bird"; Trondhjemsfjord, on the skin of Spinax niger several times; Tjoto (Tjotta) in Nordland (Sars 1. a). — of Ireland S°°37' N-> ii°I2'W., abt. 450—1000 m., in a small net attached to the trawl (Sexton 1. c. p. 375). Genus Acidostoma Norman. Acidostoma G. O. Sars 1895, p. 37. Stebbing, 1906, p. 14 (
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. 40 CRUSTACEA V. Distribution. W. Norway from abt. 66° N. to abt. 6o°N.: Hardangerfjord; the Storeggen-bank, abt. 200 in., "on the skinned body of a newly shot bird"; Trondhjemsfjord, on the skin of Spinax niger several times; Tjoto (Tjotta) in Nordland (Sars 1. a). — of Ireland S°°37' N-> ii°I2'W., abt. 450—1000 m., in a small net attached to the trawl (Sexton 1. c. p. 375). Genus Acidostoma Norman. Acidostoma G. O. Sars 1895, p. 37. Stebbing, 1906, p. 14 (lit.). Only one species, A. nodiferum n. sp., is found in the "Ingolf'-area. Also the other two species of the genus are North Atlantic, but they are not found in the "Ingolf'-area. *3o. Acidostoma nodiferum n. sp. (Fig. 1). Occurrence. This new species was not taken by the "Ingolf", but was secured by the "Trior". of the Fseroes: "Thor" St. 78 (). 6i°07' N., 9°3o' W. (sex?), 5 mm. (type). The present species, as far as may be seen without total dissec- tion, differs from A. obesum ( Sars 1895, p. 38, PI. 14 fig. 2) only in the great notch on the dorsal side of 1. urosome segment (— the specific name is an allusion to this character—). On account of the very thick peduncle of 1. antenna the type seems to be an immature J, but there are no calceoli. In ant. 1 only the 5 proximal flagellar joints are kept; accessory flagellum is 5-arti- culate; flagellum of ant. 2 is 5(?)-articulate. (In a specimen [sex?], mm., from (> miles of Skagen, with well preserved antenna', the figures are: Ant. 1: flagellum 6-articulatc, accessory flagellum 5 joints; in ant. 2 flagellum has 5 joints. —In a specimen jscx?], 4 111111., from "Thor" St. 120, 1^05 [see below] the figures are 4, 6, 6 respect- ively, and in this last-named specimen the rather lone, apical joint of outer ramus of 3. uropo
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