Tryphosa 71 



6*^ Joint scarcely as long as 5*^ palm oblique, finger with secondaiy tooth 

 conspicuous. Gnathopod 2, 6*^ Joint as broad as 5*^ üropod 3, inner ramus 

 equal to basal Joint of outer. Telson with 3 or 4 pairs of marginal spinules. 

 Colour pale reddish. L. 9 7 mm. 



Arctic Ocean (Nordland, Finmark), Trondhjemsfjord. Depth 188 — 282 m. 



7. T. compressa 0. Sars 1891 & 1895 T. c, G. O. Sars, Crust. Norway, v. 1 

 p. 76; p. 685 t. IV f. 2 j 1893 Tryphosella c, J. Bonuier in: Bull. sei. France Belgique, 

 u24 p. 171. 



Head, lateral angles much projecting, naiTOwly rounded. Pleon segment 3, 

 postero-lateral angles less than a right angle, the poiut not sharpened, 

 segment 4 as in T. angulata. Eyes long, naiTow, slightly sigmoid, light red. 

 Antenna 1, 1^* Joint of peduncle rather long, flagellum 12-jointed, accessory 

 flagellum with 6 joints, 1*** short. Antenna 2 in Q subequal to antenna 1, flagellum 

 14-jointed. P]pistome large, evenly rounded. Gnathopod 1, 6*^ Joint shorter 

 than 5*^, oblong linear, the palm small, a little oblique, finger with secondaiy 

 tooth conspicuous. Gnathopod 2, 6*^^ Joint large, hirsute, broader than 5*^, 

 distally widened, palm transverse, defined by a projecting angle, finger rather 

 strong and curved. üropod 3, inner ramus scarcely longer than basal Joint 

 of outer. Telson with 3 pairs of marginal spinules. L. 9 8 mm. 



Arctic Ocean (West of Spitzbergen, Nordland). 



8. T. nanoides (Lillj.) 1865 Anonyxn., W. Lilljeborg in: N. Acta Soc Upsal., 

 ser. 3 u6 nr. 1 p. 25 t. 3 f. 32— 34 | 1893 A. 71., A. Della Valle in: F. Fl. Neapel, v.2Q 

 p. 832 [ 1871 Tryphosa n., A. Boeck in: Forh. Selsk. Christian., 1870 p. 118 | 1876 T.n., 

 A. Boeck, Skand. Arkt. AmpWp., v.2 p.l86 | 1891 & 95 T.n., G. 0. Sars, Crust. Norway, 

 v.l p.79 t.28 f. 2; p.684 \ 1893 Tryphosella n., J. Bonnier in: Bull. sei. France Belgique, 

 V. 24 p. 171. 



Head, lateral angles little projecting, rounded. Pleon segment 3, 

 postero-lateral angles a little obtusely upturned, segment 4 with rounded 

 carina overlapping segment 5. Eyes large, reniform, pale red. Antenna 1, 

 peduncle massive, flagellum with 11 joints, 1^* very large, accessory flagellum 

 with 10 joints, 1*** comparatively large. Antenna 1 in 9 rather longer than 

 antenna 2, flagellum 22-jointed. Epistome with narrow rounded lobe overhanging 

 Upper lip. Gnathopod 1, 6*^ Joint a little shorter than 5*^, palm transverse. 

 Gnathopod 2, 6*^ Joint about half as long as 5*^ scarcely as broad. üropod 3 

 larger than usual, inner ramus subequal to basal Joint of outer, both with 

 small setae on inner margin. Telson veiy slightly tapering, with 3 or 4 pairs 

 of marginal spinules. Body whitish pellucid, with diffuse orange patches. 

 L. 9 8 mm. 



Arctic Ocean; North - Atlantic, North -Sea, Skagerrak, Kattegat and Baltic 

 (Norway, Sweden, Denmark, Scotland). Depth 94 — 188 m^ 



9. T. horingii Boeck 1871 T. h., A. Boeck iri: Forh. Selsk. Christian., 1870 

 p.ll8 I 1876 T. höringii, A. Boeck, Skand. Arkt. Amphip., v.2 p.l82 | 1891 T.hörringii, 

 T. höringii, G. 0. Sars, Crust. Norway, v. 1 p. 77 t. 27 f. 2 | 1893 Tryphosella hörringü, 

 J. Bonnier in: Bull. sei. France Belgique, t?. 24 p. 171 | 1893 Anonyx nanus (part.), 

 A. Della Valle in: F. Fl. Neapel, v. 20 p. 820. 



Head, lateral angles projecting, rounded. Pleon segment 3, postero- 

 lateral angles almost quadrate, segment 4 with high carina angularly produced at 

 apex. Eyes large, oblong oval, widened below, light red. Antenna 1, peduncle 

 stout, flagellum with 11 joints, 1^* not very large, accessory flagellum with 6 joints, 



