Synchelidium, Oediceros 243 



defined by a stout spiue, divided into numerous little teeth, of which 5 

 interspersed are more conspicuous than the rest. Gnathopod 2, 2^ Joint 

 distally constiicted, process of 5*^ showiag Separation or suture at base, then 

 coalesced tili near the chela, which it a little overtops, long 6^^ Joint rather 

 Wide at base. the naiTow thumb fringed with minute denticle and 4 larger 

 hooked ones at apex, finger apically hooked, Telson subquadrate, not longer 

 than broad. Colour reddish yellow, with large brown scars of various shapes 

 on head and trunk, all the appendages pellucid, violet-gi'ey. L. 4 — 5 mm. 

 Mediterranean. 



3. S. tenuimanum Norm. 1871 Pontocrates haplocheles (err., non Kroyeriah. 



E. Grube 1864!), A. Boeck in: Forh. Selsk. Christian., 1870 p.l72 | 1876 P. h., A. ßoeck, 

 Skand. Arkt. Amphip., v.2 p. 289 t. 16 f. 3 ; 1892 Synchelidium h., G. O. Sars, Crust. 

 Norway, v.l p.319 t.ll2 f. 2 | 1893 Kröyerah. (part.), A. Della V'alle in: F. Fl. Neapel, 

 r. 20 p. 553 | 1895 Synchelidium tenuimanum, A. M. Norman in: Ann. nat. Hist., ser. 6 

 V. 15 p. 486. 



Moderately stout. Head strongly arched, rostrura vertically deflexed, 

 acute, uearly reachiug end of 1*** Joint of antenna 1 ; lateral corners angularlj' 

 produced. Eyes rather small, lenses few, bright red with chalky white coating. 

 Antenna 1 in o , 1^* Joint longer than 2*^, flagellum subequal to peduncle, 

 7-jointed. Antenna 2 in o shorter than antenna 1, flagellum subequal to peduncle. 

 Gnathopod 1, 5^^ Joint as in S. haplocheles, 6**^ much expanded, oval triangulär, 

 palm divided into 7 or 8 coarse denticles. Gnathopod 2 extremely slender, 

 6**1 Joint narrow at base, but much more so at the chela, which is scarcely 

 more than ^^ of its length, overtopped very slightly by a naiTow poiut of 

 the process of the 5*^ Joint. Peraeopods 1 and 2, G*^ Joint shorter than 5*'S 

 finger minute. Peraeopod 5, 5*^ and 6^^ joints subequal. Telson rather 

 small, scarcely longer than broad, insinuate slightly at apex. Colour pellucid, 

 whitish, not at all diversified; ova in pouch orange. L. Q 4 mm. 



North-Atlantic and North-Sea (Norway). Depth 94 — 564 m. 



4. S. intermedium 0. Sars 1892 S. i., G. 0. Sars. Crust. Norway, v. 1 p. 320 

 t. 113 f. 1. 



Head, rostrum slightly deflexed, scarcely reaching beyond middle of 

 1*** Joint of antenna 1 ; lateral corners obtusely rounded. Side-plate 1 with lower 

 front corner more angular than in the 2 preceding species. Eyes rather small, 

 lenses few, light red with whitish coating. Antenna 1 in o , 2"* Joint fiilly as 

 long as 1*^*, 3"^ rather long, flagellum much shorter than peduncle, 6-jointed. 

 Antenna 2 in o much shorter than antenna 1, flagellum scarcely as long as 

 peduncle. Gnathopod 1 nearly as in S. haplocheles, but process of 5*^ Joint 

 less produced, Gnathopod 2 more slender than in S. haplocheles, but less 

 elongate than in S. tenuimanum, chela about 7« as long as 6*^ Joint. Peraeo- 

 pods 1 and 2, 5*^ and 6^^^ joints subequal, otherwise peraeopods 1 — 5 about as in 

 8. tenuimanum. Telson oval, decidedly longer than broad, apically transversely 

 truncate. Colour pellucid, whitish, not diversified. L. Q 4 mm. 



Trondhjemsfjord. üepth 282—750 m. - 



6. Gen. Oediceros Kr0yer 



1842 Oediceros (Sp. un. : 0. saginatus), Kreyer in: Naturh. Tidsskr., u4 p. 155 • 

 1892 0., G. 0. Sars, Crust. Norway, i'.l p. 287 | 1893 0. (part.), A. Della Valle in: 



F. Fl. Neapel, «;. 20 p. 541 | 1853 Oedicerus (non Kollar & L. Redtenbacher 1844, Coleoptera ! ), 

 J, D. Dana in: U.S. expl. Exp., r. 13n p. 933 | 1882 Aedicerus (laps.), Haswell, Cat. 

 Austral. Crust., p. 238, 315. 



