174 Metopa 



not like peraeopod 2, but sleuder, while peraeopods 2—5 are powerful, with 

 the 4*^ Joint expanded and produced, the finger streng, minutely serrate. 

 Peraeopods 4 and 5 have the 2*^ Joint expanded, in peraeopod 5 rounded 

 quadrangular, and the 4*^ Joint produced beiow the 5*''. Uropod 3, peduncle 

 with 1 spine, little longer than 1^* Joint of ramus, 2^ Joint of ramus shorter 

 than 1^*. Telson oval, obtusely pointed, with 2 paü-s of strong spines. 

 Colour whitish pellucid, with orange patches. L. 9 Ö mm. 



Arctic Ocean and North-Atlantic (Norway). Depth 55 — 94 m. 



3. M. sinuata 0. Sars 1887 M. bruzelü (part.), H. .1. Hansen in: Vid. Meddel., 

 ser.4 V.9 p. 97 t. 4 f. 2, 2a, b | 1892 M. sinuata, G. ü. Sars, Orust. Norway, v.l p.263 

 t. 92 f., 2. 



Body rather compressed, not very slender. Head, lateral corners angular. 

 Side-plate 4 broader than deep, much larger than 2"^ and 3*^ combined, Tower 

 margin sinuous. Pleon segment 3, postero-lateral corners a little produced. Eyes 

 rather large, irregularly rounded. Antennae 1 and 2 subcqual, short and stout. 

 Antenna 1, 1^* Joint longer than 2*^ and 3*^ combined, flagellum little longer than 

 peduncle, 12-joiuted. Antenna 2, ultimate and penultimate joints of peduncle sub- 

 equal, together longer than flagellum. Gnathopod 1 not weak, 6*^ Joint longer 

 than 5*^^, very narrowly oval, with 5 spinules on bind margin. Gnathopod 2, 

 6*** Joint oblong oval, palm minutely serrate, rather oblique in q , less so 

 in (5, defined by a slight angular projection, which like the Joint itself is 

 more strongiy developed in ö than in 9 . Peraeopods 2 — 5 rather stout, 

 2^ Joint in peraeopod 5 broadly oval, and 4*^ Joint produced a little beyond 

 6^^. Uropod 3, peduncle with 2 spines, nearly as long as ramus, of which 

 2*^ Joint is shorter than 1^*. Telson with 2 pairs of lateral spines, oval, 

 apex obtuse. L. 9 4 mm. 



Arctic Ocean and North- Atlantic (Nordland, depth 56 — 75 m ; Greenland). 



4. M. propinqua 0. Sars 1892 M. propinqva, G. O. Sars, Crust. Norway, v. 1 

 p. 264 t. 93 f. 1. 



Very near to M. sinuata; but antennae 1 and 2 longer and more sleuder, 

 antenna 1 longer than antenna 2, 1^* Joint as long as 2*^ and 3«^ combined, flagellum 

 decidedly longer than peduncle. Antenna 2, flagellum as long as ultimate 

 and penultimate joints of peduncle combined. Gnathopod 1, 6*^^ Joint shorter 

 than 5^'' and much narrower, without spinules. Gnathopod 2 rather powerful, 

 defining tooth of palm well developed. Peraeopod 5, 2*^ Joint irregularly 

 rounded, hind margin bulging in the middle, 4*^ Joint produced in a curved 

 lobe beyond h^^. Uropod 3, peduncle with 3 strong blunt spines, decidedly 

 shorter than ramus, of which 2'^ Joint is quite as long as 1^*. Telson with 

 3 pairs of lateral spines. Colour whitish, with dark brown stellate spots 

 on back, brown shadows on sides. L. about 3 mm. 



Trondhjerasfjord. Depth 75 m. 



5. M. palmata 0. Sars 1892 M.p., G. 0. Sars, Crust. Norway, v. 1 p.272 t. 96 f. 2. 



Body stout. Head, lateral corners subangular. Side-plate 4 larger than 

 2*^ and 3*^ combined, lower margin in a siiigle curve. Pleon segment 3, postero- 

 lateral angles little produced. Eyes round, rather large. Antennae 1 and 2 sub- 

 equal, sliort. Antenna 1, l^*' Joint much longer thau 2*^ and 3'^ combined, flagellum 

 a little longer than peduncle, 12-jointed. Antenna 2, ultimate Joint of peduncle 



