71 



named by Goes to be evidenty different and belonging to the genus Anonyx 

 in the restriction adopted in the present work. That the Anomjx groenlamU- 

 cus of Hansen is identical with the form here described, is beyond any doubt. 

 It cannot, however, by any means be referred to the genns Anonyx, as it differs 

 very materially from that genns in de strnctnre of the oral parts, which on 

 the other hand agrees pretty well with that in the genus OrcJiomenella. I 

 therefore have referred it to the latter genus, although it would seem to 

 differ from the other species in a few points, for instance in the structure of the 

 last pair of uropoda in the male. 



Occurrence. — Off the coast of Norway this species would seem to be 

 wholly restricted to the arctic region. I have collected it in two places only, 

 viz., at ]VIeha\Ti, nearNordcap, and at Vardo, in a depth of 20 to 50 fathoms. 

 It is now for the first time added to the Norwegian faima. 



Distribution. — West coast of Greenland (Hansen). 



Gen. 16. Nannonyx, G. 0. Sars, n. 



Syn: Orchomeue, Boeok (ex parte). 



Body unusually short and stout, with large coxal plates and poorly 

 developed metasome and urosome. Both pairs of antennae in female very short 

 and saliequal in length, with the ilagella only composed of a verj^ restricted 

 number of articulations. Peduncle of the superior antennae very tumeficated ; 

 antepenultimate peduncular joint of the inferior ones long and slender. Epi- 

 stome not distinctly delined from the anterior lip. Posterior lip comparatively 

 narrow, lateral corners obliquely truncated. Mandibles miich elongated, molar 

 expansion veiy slight, palp comparatively small, originating near the base of 

 the mandible. First pair of maxillae with the masticatory lobe almost trans- 

 versely truncated, basal lobe narrowly tapering, with a single apical seta, palp very 

 small. Second pair of maxilla; with both lobes elongated and narrow, setous 

 at the tip only. Maxillipeds well developed, with the basal part considerably 

 dilated and exhibiting along the inferior edge a series of strong diverging 

 setae, masticatory lobe very large, oblong oval, slightly creniilated at the tip, 

 basal lobe unusually elongated and narrow, nearly reaching to the end of the 

 masticatory lobe; palp slender, with the terminal joint ver^r small, knob-like. 

 Ajiterior gnathopoda ver^^ robust, nieral and car])al joints considerably ex- 

 panded and provided interiorly with a dense clothing of slender setae, propodos 

 likewise densely setovts, gradually tapering, without an\- distinct ])almar edge, 



