Metopa 181 



defined by a strong acute tootb. Peraeopods 2 — 5 moderately stout, expansion 

 of 2'^ Joint in peraeopod 5 oblong oval, and the 4"» produced nearly to end 

 of 5*^ üropod 3, peduncle with one spine, not longer than 1^* Joint of 

 raraus, which is equal to 2^. Telson without spines, more than twice as 

 long as broad, oval, apex obtuse. Coloiir whitish with bauds of crimson, 

 which on the side-plates are oblique and undulating; ova bluish. L. 2*5 — 4 mm. 



Arctic Ocean, North-Atlantic and Xorth-Sea (Christiansund, deptli 56 m, and 

 Vadsö [Norway]; Holland: France; Firth of Clyde; Liverpool -Bay); Kattegat. 



19. M. SÖlsbergi J. S. Sehn. 1884 M. s., ,1. S. Schneider in: Tromse 3tus. 

 Aarsh., v. 7 p. 71 t. 3, 4 | 1892 M. s., G. 0. Sars, Crnst. Norway, v. 1 p. 266 t. 94 f. l j 

 1893 M. s., A. DellaValle in: F. Fl. Neapel, o.20 p. 645. 



Body robust, little compressed, integument unusually soft and thin. 

 Head, lateral corners rounded. Side-plate 4 as deep as broad, rather larger than 

 2*^ and 3<i combined. Pleon segment 3, postero-lateral corners subquadrate. Eyes 

 round, yellowish red. Antenna 1 rather shorter than antenna2, 1*** Joint as long as 

 2<^ and 3«^ combined, flagellum much longer than peduncle, 14-jointed. Antenna 2, 

 ultimate Joint of peduncle equal to penultimate (Sars) or longer than it (Schneider), 

 flagellum half length of peduncle, 10-jointed. Maxilla 1, palp 1-jointed. 

 Maxillipeds with inner plates apparently separate (see Schneider t. 3 f. 6). 

 Gnathopod 1 rather strong, 4*^' Joint rectangular, little produced, 5^^' and 

 ^^^ subequal, 6^^^ oblong oval, with 2 spinules on the bind margin, but no 

 definite palm, Gnathopod 2 strong, 6^*^ Joint oblong quadrangular, but 

 slightly expanded distally, palm smooth, slightly oblique, formiug an obtuse 

 angle with the bind margin, defined by 2 spinules, and (accordiug to 

 Schneider, but not Sars) by a small process. l'eraeopod 1 not quite so 

 stout as peraeopods 2 and 3. Peraeopods 4 and 5, 2^^ Joint oblong oval, unusually 

 naiTow, 4*^ moderately expanded, and decurrent to middle of 5*^. üropod 3, 

 peduncle with 4 spinules, nearly as long as ramus, of which the 2 joints are equal. 

 Telson unarmed, oval, obtuse at apex. Colour pale carneous or yellowish. 

 L. 9 uearly 6 mm. 



Hardangerfjord and Malangenfjord [Norway]. Depfh 18 ui. 



20. M. tenuimana 0. Sars 1892 M. t., (x. 0. Sars, Crust. Norway. v. 1 p. 259 

 t. 91 f. 1. 



Body slender. Head, lateral corners angular. Side-plate 4 broader 

 than deep, much larger than 2^ and ^^ combined. Pleon segment 3, postero-lateral 

 corners rauch produced. P]yes round. Antennae 1 and 2 rather short. Antenna 1 

 rather the longer, 1^* Joint much longer than 2^, flagellum longer than 

 peduncle, 9-jointed. Antenna 2, ultimate and penultimate joints of peduncle sub- 

 equal, together as long as flagellum. Gnathopod 1, 6*^ Joint rather shorter than ö^^^, 

 tapering, without any araiature to indicate a palm. Gnathopod 2 rather 

 feeble, 6^^^ Joint slenderly oblong tiiangular, widening distally, palm quite 

 smooth, slightly oblique, defined by a tootb and spines. Peraeopods 1 — 5 nearly 

 as in M. pusilla (p. 179), but rather less stout, though with 2'* and AP^ joints 

 of peraeopod 5 more strongly developed. üropod 3, peduncle with only an 

 apical spinule, not longer than 1^* Joint of ramus, which has the 2^ Joint 

 shorter than 1***. Telson with 1 or 2 pairs of lateral spines, oval, obtuse 

 at apex. L. o 3 mm. 



North-Atlantic (West-Norway). 



