62 Scopelocheirus 



Gnathopod 1, 6*^^ Joint long, nan'ow, with double row of delicate setae at 

 apex, finger rudimentaiy in dense brush of setae. Gnathopod 2 ininutely 

 chelate. Pemeopods 3 — 5, 2^ Joint expauded; 4*^ Joint of 3^ pair expanded; 

 5*^ pair lougest. üropod 3 prolonged, rami subequal, with spinules and 

 setae. Telson long, narrow, deeply cleffc, with a pair of apical spinules. 

 2 species. 



Synopsis of species: 



Gnathopod 1, 6th Joint raucli longer than 5th 1. S. hopei • . . . p. f)2 



Gnathopod 1, 6th Joint not longer than Sth 2. S. erenatus . . p. 62 



1. S. hopei (A. Costa) 1851 Callisoma h., A. Costa, Fauna Reg. Napoli, fasc. 

 März. 1851 p.5 t.8ii f . 1 | 1851 C. h., (A. Costa in:) F. W. Hope, Cat. Crost. Ital., p.44 

 f. 2 I 1893 e.h. (part.), A. Della Valle in: F. Fl. Neapel, u 20 p. 839 t. 6 f. 11; t. 26 

 f. 1—15; t.43 f. 19 I 1853 C. barthelemyi, A. Costa, Descr. 3 Crost. dal Hope, p. 7 | 1859 

 Anonyx kröyeri, R. M. Bruzelius in: Svenska Ak. Handl., n. ser. v.'d nr. 1 p.45 t.2 f. 7 | 

 1890 Callisoma k., G. 0. Sars, Crust. Norway, n 1 p. 54 1. 19 f. 201 | 1874 C. branickii, 

 Wrzeäniowski in: Ann. nat. Hist., ser. 4 v. 14 p. 15. 



Head, lateral angles little produced. Side-plate 1 widened below, not 

 completely covering mouth-organs, expansion of 4*^ not quadrate. Pleon 

 Segment 3, postero-lateral angles almost quadrate, bind margin smooth, 4*^ 

 with dorsal depression moderately deep, followed by rounded carina. Eyes 

 broad oval, dark brownish (Sars), scarlet (Della Valle). Antenna 1 in 9 , 

 flagellum with 7 or 8 joints, P* not very large, accessory fiagellum with 3 or 

 4 joints. Mandible, 2*^ Joint of palp broad. Gnathopod 1, 6*^^ Joint considerably 

 longer than 5*^, margins parallel. Gnathopod 2, 5*^ Joint much widened 

 distally. Peraeopods 3 — 5, 4*^* Joint considerably dilated in the 3"^, but much 

 less so in the other two. üropod 3, inner ramus a little shorter than outer, 

 but scarcely nan-ower. Telson about twice as long as broad, cleft almost 

 to the base. Colour yellowish, without distinct pigmentary spots. L. O 

 5"5 (Sars), 7 (Bruzelius) mm. 



JVIoditerranean ; North- Atlantic, North-Sea, Skagerrak, Kattegat and Baltic (Great 

 Britain, Norway, Sweden). Depth 58 — 78 m. 



2. S. erenatus Bäte 1856 S. breviatus (nom. nud.), Bäte in: ßep. Brit. As-s., 

 3Ieet. 25 p. 58 | 1857 S. erenatus, Bäte in: Ann. nat. Hist., ser. 2 t\ 19 p. 138 | 1861 

 Callisoma crenata, Bäte & Westwood, Brit. sess. Crust., v. 1 p. 120 f. | 1890 C. c., G. 0. 

 Sars, Crust. Norway, v. 1 p. 53 1. 19 f. 1 | 1890 Tryphosa serra, Meinert in : Udb. Hauchs, 

 v.S p.l56 t. 1 f. 30— 38 I 1893 Callisoma hopei (part.), A. Della Valle in: F. Fl. Neapel, 

 V. 20 p. 839. 



Head, lateral angles slightly projecting. Side-plate 1 widened below, 

 completely covering mouth-organs, expansion of 4*^ quadrate. Pleon segment 3 

 almost quadrate, bind margin crenulate, 4*^ with deep dorsal depression in 

 front of rounded carina. Eyes broad oval, reddish brown, orange-coated. 

 Antenna 1, flagellum with 10 — .12 joints, 1*** very large only in ö, accessorj 

 flagellum 3-jointed. Antenna 2 in 9 , flagellum 24-jointed. Gnathopod 1, 

 6*^ Joint subequal to 5*^S slender, slightly narrowed at the middle. Gnatho- 

 pod 2, 6*^ Joint much shorter than the slender 5*^. Peraeopod 3, 2"^ Joint 

 greatly dilated. Peraeopods 3 and 4, 4*1^ Joint dilated. üropod 3, inner ramus 

 as long as outer. Telson nearly 3 times as long as broad, deeply cleft, 

 with a pair of dorsal spinules. Colour yellowish, with numerous orange 

 spots. L. O 9'5 mm. 



North-Atlantic, North-Sea and Skagerrak (Great Britain, South- and West- 

 Norway); Kattegat 



