70 Tryphosa 



3. T. trigonica (Stebb.) 1888 Hippomedon trigonicus, T. Stebbing in: Kcp. 

 Voy. Ohalleuger, t;.29 p.630 t.9 | 1893 Anonyx miersi?, A. Della Valle in: F. Fl. Neapel, 

 V. 20 p. 814, 932. 



Head, lateral angles moderately acute. Pleon segmeut 3, postero-lateral 

 angles upturned, the process short, only subacute, segment 4 with raised 

 angular apex. Anteuua 1, 1*** Joint long and narrow, flagellum with 11 joints, 

 1^* not very long, accessoiy flagellum 8-jointed. Antenna 2, ultimate and 

 antepenultimate joints of peduncle equal, shorter than penultimate, flagellum 

 9-jointed. Epistome a little prominent, rounded. Maxillipeds and gnathopod 1 

 as in T. kergueleni (p. 69). Gnathopod 2, 6*^ Joint rather stouter. Uropod 3, 

 inner brancli not longer than basal Joint of outer. Telson not greatly longer 

 than broad, the cleft not dehiscent, % of the leng-th, with 3 pairs of marginal 

 spinules and a pair on the truncate apices. L. 6 mm. 



Southern Indiau Ocean (Kerguelen Island). 



4. T. pusilla (O. Sars) 1879 Anonyx (T.) pusiUus, G. 0. Sars in : Arch. Nat urv. 

 Kristian,, vA p. 439 | 1885 T. pusilla, G. 0, Sars in: Norske Nordhavs-Exp., f. 6 Crust. I 

 p. 151 t. 13 f. 2, 2 a. 



Head, lateral angles prominent, obtuse. Pleon segment 3, postero-lateral 

 angles acute, scarcely produced, segment 4 hunched above. Eyes wanting. 

 Antenna 1, flagellum with 11 joints, 1*** rather large, accessory flagellum very 

 slender, 3-jointed. Antenna 2 about equal to antenna 1, ultimate Joint of 

 peduncle very short, flagellum 12-jointed. Epistome not described. Gnatho- 

 pod 1, 6*^ Joint subequal to ö^\ slender, palm rather oblique. Telson tapering 

 much. Colour whitish. L. 5*5 mm. 



Arctic Ocean (between Jan Mayen and Iceland). Depth 1890 m. 



5. T. sarsi (Bonnier) 1891 T. nana (err., non Anonyx nanus Kreyer 1846!), 

 G. O. Sars, Crust. Norway, v.l p. 76 t. 27 f . 1 | 1893 TryjyJiosella sarsi, J. Bonnier in: 

 Bull. sei. France Belgique, v. 24 p. 171 | 1895 Tryphosa s., G. 0. Sars, Crust. Norway, 

 v.l p. 684. 



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

 lateral angles quadrate, segment 4 without dorsal projection. Eyes oblong 

 oval, light red. Antenna 1, flagellum with 9 joints, 1^* rather short, accessory 

 flagellum slender, of 5 joints, 1*** short. Antenna 2 in 9 little longer than 

 antenna 1, flagellum 9-jointed; antenna 2 in d twice as long as antenna 1. 

 Epistome obtusely angular in front. Gnathopod 1, 6*'^ Joint about as long 

 as 5**^, palm nearly transverse. Gnathopod 2, 6**^ Joint oval, scarcely uaiTower 

 than 5*^. üropod 3, inner ramus equal to basal Joint of outer. Telson 

 with 2 pairs of marginal spinules. Body whitish, pellucid, with a few reddish 

 Spots. L. 9 4 mm. 



North- Atlantic (Norway). Depth 11—38 m. 



6. T. angulata O. Sars 1891 T. «., G. O. Sars, Crust. Norway, v. 1 p. 78 t. 28 

 f . 1 I 1893 TryphoseUa a., J. Bonnier in: Bull. sei. France Belgique, v. 24 p. 171 | 1893 

 Anonyx angulatus, A. Della Valle in: F. Fl. Neapel, «.20 p. 825. 



Head, lateral angles drawn out into a little tooth. Pleon segment 3, 

 postero-lateral angles quadrate, segment 4 with high cariua, the apex vertically 

 two-angled. Eyes veiy large, narrow oblong, light red. Antenna 1, peduncle 

 nan-ower than usual, flagellum setose, of 14 joints, 1^* not long; accessoiy 

 flagellum of 5 joints, none long. Antenna 2 in 9 a little longer than antenna 1, 

 flagellum 15-jüinted. Epistome prominent, evenly rounded. Gnathopod 1, 



