349 



projection less produced than in the preceding species, tip more broadly 

 rounded. Last pair of epimeral plates of metasome rather produced at the 

 lateral corners, without however forming any distinct spiniform projection, 

 posterior edge smooth, and slightly curved in the middle. Eyes very large, 

 and rounded triangular in form. Antennae nearly as in the preceding species, 

 except that the 1st joint of the flagellum of the superior ones is somewhat 

 shorter. Gnathopoda of a similar structure to those in that species, though 

 perhaps somewhat less slender, with the propodos more regularly oblong oval 

 in form. Pereiopoda comparatively less robust, basal joint of the 3 posterior 

 pairs oval in form, with the hind margin smooth. Last pair of uropoda with 

 the outer ramus but little exceeding half the length of the inner, marginal 

 spines in both rather coarse. Telson comparatively narrow, about twice as 

 long as it is broad, and gradually tapering distally, tip narrowly truncated. 

 Colour in the living state of the animal not yet stated. Length of adult 

 ovigerous female scarcely exceeding 8 mm. 



Remarks. - - As above stated, Dr. Hansen was the first to point out, that 

 the figures given byBoeck in his great work, and referred to \\isPleustes pulcheUn*, 

 do not agree with the description, and belong to the present species, for which he 

 has proposed the above specific name. Through the kindness of that naturalist 

 I have been enabled to examine this species, and find it perfectly distinct from, 

 though nearly allied to P.pnlcJicHa. From the latter it is easily distinguishable, 

 not only by its much smaller size, but also by several well-marked structural 

 details, such as the distinctly -carinated and greatly- produced cephalon, the 

 presence of only 3 dorsal projections, the form of the last pair of epimeral 

 plates of metasome, and finally, the shape of the telson. 



Occurrence. It may be very Questionable, whether this form in 

 reality belongs to the Fauna of Norway. I have never myself met with it, 

 and on a close revision of the very vast material of P. pulcliella, collected 

 off our coast at different times and in different localities, not even a single 

 specimen of this form could be detected. It would therefore seem most probable, 

 that the figures given by Boeck have been drawn from Greenlandic specimens. 



Distribution. Greenland (Hansen). 



4. Paramphithoe bicuspis (Kroyer). 



(PL 123, fig. 1). 



Amphithoii bicusjns, Kroyer, Gr0nlands Amphipoder; Danske Vid. Selsk. Afh. VIII, 



p. 273, PI. 2, fig. 10. 



Body rather slender, with only 2 comparatively small dorsal projec- 

 tions issuing from the 2 anterior segments of metasome. Cephalon scarcely 



45 Crustacea. 



