. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. COPEPODA 83 (fig. 5 a) the terminal spine has about 80 densely placed, partly- fused, spinules; in other respects, excejjt the arrangement of pores, which, except for the more medial ])osition is like that of Cli. obtusi/rons etc., the legs are like those of preceding species. Occurrence. The S/vS. Thor has gathered a few specimens of this species at the following two stations. ^Va 1904. St. 154. 65-27 L. N. 27°io L. W. Yt. ? Wire 3 f?. 'V7 1904. vSt. 1S3. 6i°30 L. N. i7°o8 L. W. Yt. 18


. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. COPEPODA 83 (fig. 5 a) the terminal spine has about 80 densely placed, partly- fused, spinules; in other respects, excejjt the arrangement of pores, which, except for the more medial ])osition is like that of Cli. obtusi/rons etc., the legs are like those of preceding species. Occurrence. The S/vS. Thor has gathered a few specimens of this species at the following two stations. ^Va 1904. St. 154. 65-27 L. N. 27°io L. W. Yt. ? Wire 3 f?. 'V7 1904. vSt. 1S3. 6i°30 L. N. i7°o8 L. W. Yt. 1800 M. Wire 2 f?. Remarks. This species, which seems to stand between the species of Cliiridius without rostrum and Ch. itasutus, is well characterized by the shape of the rostrum and the position of the glau- dular pores. 19, Chiridius obtusifrons G. O. Sars. (Plate II figs. 2 aâb; text-figs 20 aâe). 1897. Pseudocalanus Boeck. Vauhiiffcii, p. 279, tig. 6. 1900. Chiridius arinatus Boeck. G. O. Sars, pp. 29â30, pi. XVII. 1902. - â Mrazek, pp. 521-â22. 1903. Chiridius obtusifrons 11. sp. G. O. Sars, pp. 29â30, pi. 17. 1904? 1907. â â G. O. Sars. Wolfenden, p. 131. â Vauhoffeni n. sp. Wolfendeu, p. 117, pi. IV fi,«,- 23. â obtusifrons G. C). Sars. Koefoed & Damas, p. 408. 1907. Chiridius arniatus Boeck. Vaulic'lffcii, p]). 519 521. 1908. â obtusifrons G. O. Sars. v. Bremen, pp. 34 â35, fig. :â¢,-!â 1909. nee. Chiridius? obtusifrons G. (). S;irs. \. Scott, ]). 43, pi. XLIV figs I 3. 1913. pars. â arniatus Boeck. Stephensen, pp. 316 317. Description. i% vSize: vSpecimeu from Thor vSt. 214 measured 439 mm.; anterior division 3-12 mm., urcsoine 1-27 mm. Sars' specimens measured 4-2 mm. and Vauhoffens 45 mm. b The shape of the body is as figured by Sars (of. text-fig. 20 a). The articular membrane between the head and first thoracic tergite and between the fourth and fifth thoracic tergite (except in the middle) is often wanting; in the articular m


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