nence at the base of the rostrum, pigment dark red. Superior antennae 

 scarcely attaining V^of the length of the body, and reaching somewhat beyond 

 the peduncle of the inferior, 1st joint of the peduncle about the length of 

 the 2nd, but much thicker, flagellum a little shorter than the peduncle, and 

 composed of about 13 articulations. Inferior antennae nearly l /3 longer than 

 the superior, last joint of the peduncle rather elongated, equalling in length 

 the 2 preceding joints combined, flagellum somewhat shorter than the peduncle. 

 Gnathopoda rather powerful, carpal process slightly curved, and somewhat 

 dilated in the middle, its inferior edge provided with dense tufts of setae, 

 propodos oblong oval in form, more than twice as long as it is broad, palm much 

 longer than the hind margin, and defined below by a small denticle, its edge 

 slightly curved, and armed with a row of small denticles alternating with 

 short curved setse, dactylus long and curved. The 4 anterior pairs of pereio- 

 poda comparatively short and stout, nearly equal in length, dactylus in all 

 rather short. Last pair considerably exceeding half the length of the body, 

 basal joint rounded oval, with the posterior edge slightly concave. Last 

 pair of uropoda with the inner ramus a little longer than the outer, and armed 

 on the inner edge with 4 spinules. Telson rounded quadrangular in form, 

 but little longer than it is broad, tip obtusely truncated. Body whitish, with 

 a pale orange tinge, and ornamented on the back with transverse bands of a dark 

 brownish violet pigment, forming on the sides of the cephalon a more or less 

 distinct reticulation. Length of adult female reaching nearly 20 mm. 



Remarks. The present form, first described by Kroyer from Green- 

 landic specimens, is easily recognizable by the peculiar geniculated form of 

 the front and the rather long and acuminate deflexed rostrum. It is the type 

 of the genus. 



Occurrence. The only place off the Norwegian coast where I have 

 met with this form, is in the Varangerfjord, at Vadso, east Finmark. It 

 occurred here rather sparingly in a depth of 1020 fathoms, sandy clay. 

 Mr. Schneider has also found it in the Porsangerfjord and at Vardo. Accord- 

 ing to Boeck, it has moreover been taken at Tromso by Dr. Danielssen, and 

 so far south as Christiansund by v. Diiben. 



Distribution. -- Arctic Ocean: Greenland (Kroyer), Iceland (Torell), 

 Spitsbergen (Goes), the Murman coast (Jarzynski), the Siberian Polar Sea 

 (Stuxberg). 



37 Crustacea. 



