Paratryphosites, Paronesimiis 48 



ultimate and penultimate joints of peduncle subequal. Mandible, molar prominent, 

 palp affixed over it or a little in front, 2^ and 3*^ joints subequal. Maxilla 1, 

 inner plate carrying 5 setae, outer with the usual spines, palp broad at apex. 

 Maxilla 2, with setae on inner margin of inner plate. Maxillipeds, outer plates 

 reaching much beyond 2^ Joint of palp. with spine-teeth on straight inner 

 margin. Gnathopod l subchelate, 6*^ Joint shorter than 5*^, of uniform 

 width, palm oblique, well defined, overlapped by finger. Gnathopod 2 sub- 

 chelate, 5*^ Joint distally widened, 6*^ a little more than half as long. 

 Peraeopods 3 — ^5, 2^ Joint large, serrate on bind margin, 4*** expanded in 

 3*^ and 4**^ pairs, 4**^ pair the longest. üropod 3, rami with many spinules, 

 outer the longer. Telson little longer than broad, cleffc scarcely reaching 

 the raiddle, dehiscent, each apex carrying 5 spinules. 



1 species. 



1. P. abyssi (Goes) 1866 Lysinnassa a., Goes in: Öfv. Ak. Förh., r. 22 p. 519 

 t. 37 f. 5 I 1871 Hippomedo7i a., A. Boeck in: Forh. Selsk. Christiaa., 1870 p. 103 | 1872 

 H. a., A. Boeck, Skand. Arkt. Amphip., v. 1 p. 138 | 1890 H. a., G. O. Sars, Crust. Norway, 

 V. 1 p. 56 I 1893 Eiiryporeia? a., A. Della Valle in: F. Fi. Neapel, r. 20 p. 848 | 1899 

 Lysianassa a., Paratryphosites sp. typ., T. Stebbing in: Ann. nat. Hist., ser. 7 vA p.206. 



Head, lateral angles acute. P]yes oval, red. Antenna 1, P* Joint long, 

 cylindrical, not produced, flagellum with 10 — 12 joints, accessory flagellum with 

 3 subequal joints. Antenna 2, flagellum 22-jointed. L. reaching 17 mm. 



Arctic Ocean (north of lat. 68» 36' N.) Depth 38—528 m. 



25. Gen. Paronesimiis Stebb. 



1894 Paronesimus (Sp. un.: P. barentsi), T. Stebbing in: Bijdr. Dierk., v.ll p. 14. 



Side-plate 1 not expanded below, 4*^' only slightly, lower bind margin 

 Dbliquely truncate. Antenna 1, P* Joint tumid, 2*^ and 3*^ very short. Antenna 2, 

 ultimate Joint of peduncle much shorter than penultimate; flagella of both pairs 

 Short in Q. Mandible, molar not very strong, palp attached over the molar, 

 much longer than trunk, P* Joint short, 3^ subequal to 2'^ Maxilla 1, 2 setae 

 on inner plate, 11 spines on outer, 4 or 5 spine-teeth on long 2^ Joint of palp. 

 Maxilla 2, inner plate narrower than, much more than half as long as outer. 

 Maxillipeds, 3 teeth on inner plates, outer plates with minute teeth on inner 

 margin and 1 spine on apical, 3*^ and 4*^1 joints of palp rather elongate. 

 Gnathopod 1, 6*** Joint louger than 5*^, its slightly curved oblong narrowed 

 distally, forming a very short palm not in line with Insertion of the short 

 tinger. Gnathopod 2, 3^ Joint as long as 0*^^^ 6^^^ much more than half as long 

 as 5^^, widening gradually to a sinuous palm, 7*^ Joint strongiy curved. Peraeo- 

 pods 1 and 2, 2*^ Joint stout, rather short, 4*^ rather large. Peraeopods 3 — 5, 

 2^ Joint much longer than broad, 4*** rather broad. üropods 1 — 3, rami not 

 elongate. üropod 3, rami short, smooth, the outer the longer, with a small 

 2^ Joint. Telson IV.^ times as long as broad, cleffc for nearly half its length. 



1 species. 



1. P. barentsi Stebb. 1894 P. b., T. Stebbing in: Bijdr. Dierk., r.l7 p. 14 t.2. 



Pleon Segment 3, postero-lateral angles forming small upturned point. 

 Antenna 1 in 9, flagellum, 1^* Joint much larger than next, accessory flagellum 

 4-jointed. Antenna 2 in 9 , flagellum 10-jointed, Telson with a spinule in each 

 of the slightly divergent apices. L.? 



Arctic Ocean (lat. 76« N., long. 54» E.) Depth 125 m. 



