90 



of Norway in depths varying from 20 to 300 fathoms, but is by far most 

 frequently met with in the arctic region, off the coast of Nordland and Fin- 

 mark, where it also reaches a much larger size than farther south. 



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

 bergen, Iceland, Jan Mayen, Arctic America, Frantz Josephs Land, the Barents 

 Sea, the Murman coast, the Kara Sea, the Siberian Polar Sea, the Behring 

 strait; the Norwegian North Atlantic Expedition, in numerous places, down 

 to 058 fathoms; Bohuslan (Bruzelius); Shetland Isles (Norman). 



37. Anonyx Lilljeborgii, Boeck. 



(PI. 32, fig. 1.) 

 Anonyx Lilljeborgii, Boeck, Crust, amphip. bor. & arct. p. 29. 



In general appearence very like the preceding species, but somewhat 

 more slender and with the coxal plates comparatively smaller. Cephalon with 

 the lateral corners a little more produced and narrowly rounded at the tip. 

 First pair of coxal plates less dilated in their inferior part, 4th pair but little 

 deeper than the body. Last pair of epimeral plates of metasome with the 

 terminal lobe comparatively smaller than in the preceding species and less 

 acute. First segment of urosome deeply impressed dorsally. Eyes rather 

 large, oblong reniform, gradually somewhat dilated below, pigment brownish 

 red. Superior antennae comparatively shorter than in the preceding species, 

 peduncle less tumeficated; fla.gellum 14-articulate, 1st joint about the length 

 of the 3 succeeding ones combined ; accessory appendage about half the length 

 of the nagellum and 6-articulate. Inferior antennae but very little longer than 

 the superior, nagellum composed of about 15 articulations. Anterior gnatho- 

 poda less robust than in the type species, propodos about the length of the 

 carpus and gradually tapering to the transversely truncated extremity. Post- 

 erior gnathopoda very slender, propodos narrower than in the said species 

 and more distinctly produced at the tip beneath the dactylus. The 2 anterior 

 pairs of pereiopoda with a very conspicuous obtuse denticle at the end of the 

 propodos immediately below the dactylus, the 3 posterior pairs comparatively 

 less elongated. Last pair of uropoda with the rami considerably narrower 

 than in the preceding species and having a less number of marginal denticles. 

 Telson a little longer in proportion to its breadth, otherwise very like that 

 in the preceding species. Length of adult female 11 mm. 



ErmarJcs. This species is very nearly allied to A. nugax, though 

 differing somewhat in several of the structural details. I have not myself 

 met with it, but have had an opportunity to examine a rather well preserved 



