106 



Distribution. - Arctic Ocean widley distributed : Greenland, Spits- 

 bergen, Iceland, Jan Mayen, Franz Josephs Land, the Murman coast, the 

 Kara Sea, the Siberian Polar Sea, Arctic North America; Bohuslan. (Bruze- 

 lius), Kattegat (Meinert). 



47. Onesimus Normani, Schneider, M. S. 



(PL 3G, fig. 2). 



Body short and stout, though somewhat more compressed than in the 

 preceding species. Cephalon scarcely as long as the 1st segment ofmesosome, 

 lateral corners somewhat produced and acute at the tip. First pair of coxal 

 plates scarcely widening below; the 2 succeeding ones nearly twice as deep 

 as the corresponding segments ; 4th pair but slightly emarginated posteriorly 

 and forming below the emargination a rather short and blunt projection; 5th 

 pair about as deep as broad. First pair of epimeral plates of metasome pro- 

 duced at the infero-anterior corners to a narrow hook-like projection; last pair 

 with the infero-posterior corners drawn out to a sharp upturned point. First 

 segment of urosome scarcely impressed dorsally. Eyes oblong oval, somewhat 

 narrower than in the preceding species, pigment red. Both pairs of antennae 

 in female very short and stout, nearly subecjual in length : superior ones with 

 the peduncle much tumeficated, flagellum but very little longer than the 

 peduncle and composed of 8 articulations only, the 1st of which is very large, 

 about equalling in length the whole remainder part of the flagellum; acces- 

 sory appendage exceeding half the length of the flagellum and 3-articulate, 

 1st joint twice the length of the other 2 combined. Inferior antennae with 

 the flagellum shorter than the peduncle and only composed of 8 articulations. 

 Anterior gnathopoda with the propodos scarcely longer than the carpus, pal- 

 mar edge straight, densely spinulose and very oblique, inferior angle obsolete. 

 Posterior gnathopoda with the propodos half the length of the carpus and 

 scarcely widening distally. Posterior pereiopoda somewhat less robust than 

 in the preceding species, but otherwise rather similar. Last pair of uropoda 

 with the inner ramus simple lanceolate, without any marginal denticles; pe- 

 nultimate pair with the inner ramus deeply indented beyond the middle, 

 terminal part spiniform. Telson a little more long than broad, posterior 

 incision deeper than in 0. Edirardsii, terminal lobes slightly indented at the 

 tip. Colour not stated. Length of female 9 mm. 



Remarks. - The present new species was first detected by Mr. Schnei- 

 der in the neighbourhood of Tromso, Fimnarken, and has been named by 

 that author in honour of the well known British naturalist, the Rev. 

 A. Norman, who last summer was accompanied by Mr. Schneider during his 



