. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. 32 CRUSTACEA MALACOSTRACA VIII (AMPHIPODA IV) outer ramus terminates in two small recurved spines (in left uropod 3), or in four deminutive teeth (in right uropod 3). Telson â lie pair of dorsal setae. These differences from Sars's specimens are probably due to different size and age; the specimen described above is probably an adult <J (9 mm), while Sars's description was based on a specimen a trifle smaller (8 mm) and probably not quite mature. Two other (JcJ which are in length equal
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. 32 CRUSTACEA MALACOSTRACA VIII (AMPHIPODA IV) outer ramus terminates in two small recurved spines (in left uropod 3), or in four deminutive teeth (in right uropod 3). Telson â lie pair of dorsal setae. These differences from Sars's specimens are probably due to different size and age; the specimen described above is probably an adult <J (9 mm), while Sars's description was based on a specimen a trifle smaller (8 mm) and probably not quite mature. Two other (JcJ which are in length equal to Sars's specimen, have pereiopod 1 shaped as in Sars's figure, with palm evenly curved and with also pereiopod 2 agreeing with Fig. 23. Ischyrocerus assimiiis $ with marsupium, 8 mm, differs from the large <$ in but few characters: flagellum in antenna 1 has 8 (not 10) joints (but flagellum in antenna 2 has 6-7 joints in both sexes). Pereiopod 1 has palm evenly curved as in Sars's figure, but pereiopod 2 has palm divided into two portions as in pereiopod 1 <J. Distribution. The deep Arctic Basin 827 m, -4-1°0; South of Bear Island, 64 m, + 1°1; North of Spitsbergen, 1000 m; Hudson Bay; for references see K. Stephensen 1935-42, p. 398. 340. Ischyrocerus megalops G. 0. Sars. Ischyrocerus megalops G. 0. Sars, Crust, of Norway, , 1895, p. 591, pi. 210 fig. 2. Ischyrocerus megalops Stebbing, Tierreich, vol. 21, 1906, p. 660. Occurrence: 61°42'N, 9°36'W, 1026 m, 4°8. "Ingolf" St. 44: 9-VIII-1895. 10 specimens. Distribution. Northern Norway 6572°-70c N, 1-75 m: eastern Spitsbergen 60 m. For special localities see K. Stephensen, Tromso Mus. Skr., vol. 3, 1935-42, p. 398. 341. Ischyrocerus brevicornis (G. 0. Sars). Podocerus brevicornis G. 0. Sars, Crust,, vol. 1; Norske Nordhavs- Exp., 1885, p. 207, pi. 17 fig. 2. Ischyrocerus brevicornis Stebbing, Tierreich, , 1906, p. 661. Occurrence: 66°23'N, 12°05'W, 1011m, ~ 0°7. &qu
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Keywords: ., bookcentury1800, bookdecade1890, booksu, booksubjectarcticregions
