72 



Anterior pairs of legs nearly as in 0. borealis, though somewhat less densely 

 spinotis; last pair rather different, the basal joint being scarcely at all expanded, 

 and without the dense fringe of set* found in C. borealis, meral and carpal joints 

 rather large, but only sparsely spinous, propodal joint much shorter than the 

 carpal one. Uropoda with the inner process of the basal part considerably pro- 

 duced, outer plate narrow lanceolate, and without any> marginal spinules, inner one 

 much broader, widening distally. with the tip blunted and the outer edge slightly 

 emarginate near the end. Colour whitish. Length of an apparently adult 

 specimen 10 mm. 



Remarks. This form was first recorded by the present author in 1872 

 as C. Cranchi, Leach. Subsequently, however, I found that it agreed much more 

 closely with the North American species C. concharum Stimpson, and it was re- 

 corded under this name in the Report on the Crustacea from the Norwegian North 

 Atlantic Expedition, as also in my synopsis of Crustacea of Norway. According 

 to Dr. Hansen, who has studied the several species of this genus very carefully, 

 it differs, however, in some particulars also from the North American species, so 

 that it should more properly be regarded as a distinct species, for which the name 

 proposed by Dr. Hoek in 1882 ought to be retained. From C. borealis it may be 

 easily distinguished by its more oblong form, the small size of the eyes, the com- 

 paratively short inferior antennae, the rather different structure of the last pair 

 of legs, and finally by the form of the terminal segment of the metasome and 

 that of the uropoda. 



Occurrence. Only 2 specimens of this form have hitherto been observed by 

 me, the one being found, many years ago, inside the Storeggen bank, west coasst of 

 Norway, the other being taken during the Norwegian North Atlantic Expedition, 

 east of Vardo. 



Distribution. The Barents Sea (Hoek). 



Gen. 2. Eurydlce, Leach, 1815. 



Syn : Slabberma, v. Beneden. 



Generic Characters. Body resembling in its external appearance that in 

 the genus Cirolana, though having the metasome comparatively more fully deve- 

 loped, with the penultimate segment of same appearance as the preceding ones, 

 and the terminal segment very large and broad. Eyes well developed, lateral. 



