Astyra, Syrrhoites 279 



as loug as peduiicle. Guathopod 1 rather stronger than gnathopod 2, o*^'* Joint 

 ratber longer and much wider than 6^^, ending in a short rounded setose 

 lobe, 6*^ Joint narrow oblong, with no distinct palm, finger short, spinöse 

 on inner margin. Peraeopods 3 — 5, 2'^ Joint having outside an elevated 

 diagonal ridge, finger lanceolate, spinulose at the edges. üropod 1, rami 

 nearly equal; uropod 2. rami rather unequal; uropod 3 with the shortest 

 peduncle, the longest rami, inner a little longer than the outer and lougi- 

 tudinally ridged. Telson rather longer than broad, cleft beyond middle, 

 lobes distally diverging. Colour pale yellowish. L. c 8 mm. 



Arctic ücean, Noi-th-Atlantic and Xorth-Sea (North- and West-Norway). Depth 

 188- -564 m. 



5. Gen. Syrrhoites 0. Sars 



1893 Syrrhoites (Sp. un.: S. serrata), G. O. Sars, Crust. Norway, v.l p. 391. 



Body rather stout, compressed, carinate. Head, rostrum acute, deflexed, 

 cheeks deep, inflated. Side-plates 1—3 narrowly quadrangular. Eyes wanting. 

 Antennae 1 and 2 subequal in o , in d antenua 2 the longer. Upper lip 

 short, broad, di-stally truncate. Lower lip, inner lobes rather small, outer 

 incised near apex on inner margin. Mandible stout, compact, cutting edge 

 conical, not dentate, or only bidentate, spiue-row wanting, molar a very 

 broad, triturating surface, palp extreraely slender, 3^ Joint not longer than 1^*. 

 Maxilhi 1, inner plate with several setae. outer with 11 spines, palp long. 

 Maxilla 2, inner plate the broader, fringed on inner margin. Maxillipeds, 

 inner plates broad. outer broad, arraed with unusually stroüg spines, 3<^ Joint 

 of palp linear, finger very small. Gnathopods 1 and 2 feeble, 5^^ Joint 

 twice as long as 6^'S which is small, imperfectly subchelate. palm very 

 oblique, with no stroug defining spine. Peraeopods 1 and 2 very slender 

 und feeble. Peraeopods 3 — 5 much stronger, successively longer, 2*^ Joint 

 expanded oval, üropods 1 and 2, outer ramus the shorter; uropod 3, rami 

 lanceolate, subequal. Telson loug. distally narrowed, deeply cleft. 



3 speeies accepted, 1 doubtful. 



Synopsis of accepted speeies: 



/ Pleon Segment 3, margin above postoro-lateral tooth 



) serrate LS. serratus . . p. 279 



j Pleon Segment 3, margin above postero-lateral tooth 

 ^ simple — 2. 



j Pleon Segments 1 — 3 with dorsal teeth inconspicuous 2. S. fimbriatus . p. 280 

 \ Pleon Segments 1 — 3 with dorsal teeth conspicuous 3. S. walkeri . . p. 281 



1. S. serratus (0. Sars) 1879 Bruzelia serrata, ß. O. Sars in: Arch. Xaturv. 

 Kristian., v.4 |i.447 | 1885 B. s., G. O. Sars in: Norske Nordhavs-Exp., v.6 Crust. I 

 p. 182 t.l5 f. 3 1893 ß. s., A. Della Valle in: F. Fl. Neapel, n 20 p.668 t.59 f. 77, 78 

 1893 Syrrhoites s., G. 0. Sars, Crust. Norway, v. 1 p. 392 t. 137. 



Carinate throughout, peraeon segments 4—7 with carina raised to 

 simple triangulär processes, pleon segments 1 — 3 to a small and a large 

 point, hinder on segment 3 upturned. on segments 4 — 6 likewise pröduced, 

 on segment 4 with 2 points in o, with only 1 in d\ on segment 5 upturned 

 in Q . much stronger and deflexed in ö . Head, rostrum strongly deflexed, 

 reaching apex of 1** Joint of antenua 1, lateral corners rounded. Side-plate 3 

 scarcely expanded bclow. 4*^^ rather less deep than 3*^, slightly emarginate. 



