232 Liljoborgia 



1871 Lilljehorgia f., A. Boeck in: Forh. Selsk. Christian., 1870 p. 155 | 1876 L. /"., 

 A. Boeck, Skand. Arkt. Amphip., v.2 p.499 1. 18 f. 10 | 1889 L. f., A. M. Norman in: 

 Ann. nat. Hist., ser. 6 ü. 4 p. 118 t. 10 f. 11 ; 1894 L. f., G. O. Sars, Crust. Norway, v. 1 

 p. 534 1. 189 1 .1866 Gammarus pallidus (err., non Bäte 1857!), Goes in: Ofv. Ak. Förh., 

 V. 22 p. 529 t. 40 f. 27 | 1893 Nicippe pallida (part.), A. Della Valle in : F. Fl. Neapel, 

 V. 20 p. 658. 



Body rather slender, pleon segments 1^ — 5 each produced into a dorsal 

 tooth, Segments 4 and 5 carinate and the tooth on each large, especially that on 

 Segment 4. Head, rostrum small, lateral corners subangular. Side-plate 1 mucli 

 expanded distally. Pleon segment 3, postero-lateral corners produced to a sraall 

 tooth. Eyes wholly wantiug. Antenna 1, flagellum nearly twice as long as peduncle, 

 18 — 20-jointed, accessory flagellum more than half as long, 10 — 12-jointed. 

 Antenna 2 longer by almost the whole flagellum. Gnatliopods 1 and 2 in 9 , palm 

 curved, oblique, defined by a projecting angle and strong palmar spines, 

 finger in gnathopod 1 with 4 teeth at base, in gnathopod 2 with about 9 

 covering the proximal -/s of margin. Gnathopod 1 in d as in 9 , but gnatho- 

 pod 2 with 6*^ Joint very large, dilated at base, then tapering, palm long, 

 straight or slightly concave, finely ciliated, flnger very large, greatly curved, 

 without teeth. Peraeopods 3 — 5, 2^ Joint narrowly oblong, 4*^ pair much 

 longer than 3*^, and 5*^ than 4*^ In peraeopod 5, 6^^ Joint with small 

 setae on both margins, finger rather short. Uropod 3, rami equal in length, 

 inner the broader, with 3 spines on inner margin. Telson longer in ö 

 than in o , cleft not much beyond the middle, apices contiguous at the 

 inner points, the outer considerably more produced, a long spine in each 

 notch. Colour uniformly yellow. L. 9 10, d 11 mm, but arctic specimens 

 reaching 20 mm. 



Arctic Ocean and North-Atlantic (Greenland, Spitzbergen, Trondhjemsfjord, 

 Finmark); Skagerrak (Bohuslän). Depth 94 — 376 m. 



5. L. eonsanguinea Stebb. 1888 L. c, T. Stebbing in : Kep. Voy. Challenger, 

 u29p.980t.91 I 1893 Nicippe pallida i^art), A. Della Valle in: F. Fl. Neapel, v.20p.658. 



Pleon Segments 1 — 5 carinate, each produced to a small but pronounced 

 dorsal tooth. Head, rostrum small, well marked, lateral corners narrowly 

 obtuse. Side-plate 1 broadly produced forward, 1*** — 3^ with a denticle at 

 the front and hind corners, 4*^ with the bind margin below the excavation 

 straight, serrate into 4 teetli. Pleon segments 1 — 3, postero-lateral corners 

 acute, in segment 3 slightly upturned with small sinus above. Eyes doubtful. 

 Antenna 1, 2*^ Joint fully half as long as 1^*, flagellum rather longer than 

 peduncle, 13-jointed, accessory flagellum more than half as long, 8- or 9-jointed. 

 Antenna 2 not much longer than antenna 1, ultimate Joint of peduncle rather 

 longer than penultimate, flagellum shorter than both combined, 13-jointed. 

 Upper lip very slightly bilobed. Maudible, accessory plate strongly dentate 

 on left, feebly denticulate on right, spine-row of 6 spines, molar almost 

 evanescent, represented by a row of spines, 2'^ Joint of palp a little longer 

 than 1^*, 1^* than 3*^. Maxiila 1, inner plate with 2 setae instead of 1 as in the 

 European species, outer plate with 10 spines. Gnathopods 1 and 2 in 9 as in 

 L. fissicornis (p. 231), but 4*'' Joint of gnathopod 1 distally rounded (?). Peraeo- 

 pods 3 — 5 distinguished from those of L. fissicornis by the broadly oval 2"^ Joint, 

 which also in peraeopod 5 has the hind margin very convex. Uropod 3, 

 rami rather longer than peduncle, inner little broader and rather shorter 

 than outer, with 2 spinules on the inner margiu. Telson as in L. fissicornis. 

 L. 9 11 mm. 



Sonthern Indian Ocean (Kerguelen Island, depth 36 m; Heard Island, depth 137 m). 



