420 



shape, being scarcely shorter than it is l)road at the base, its outer part 

 somewhat expanded, palm but slightly curved. Pereiopoda very slender, 

 though somewhat less elongated than in E. propinqvtts, meral joint of the 2 

 anterior pairs equalling in length the propodal one, and not nearly twice 

 as long as the carpal joint; basal joint of the 3 posterior pairs rather expanded, 

 and having the posterior edge strongly serrated, that of last pair oval in 

 form, scarcely at all tapering distally. Last pair of uropoda with the outer 

 ramus miTch smaller than the inner. Telson x'ather elongated, and gradually 

 tapering from the base to the tip, posterior incision very short, scarcely 

 occupying Ve of the length of the telson, terminal lobes acuminate and sliglitly 

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

 of adult female scarcely exceeding G mm. 



Bemarlcs. — By its comparatively stoiit form of body and the distinctly 

 carinated back, this new species somewhat resembles E. cnspidafus, differing, 

 however, not only in its very small size, but also in the much shorter 

 antennse and more slender pereiopoda, as also in the rather different form 

 of the telson. 



Orcurrence. — I have only seen a few specimens of this form, which 

 were collected in the Trondhjemsfjord, at Rodbjerget, from a very considerable 

 depth, amounting to 400 fathoms. 



4. Eusirus longipes, Boeck. 



(I'l. 148, iig. 1). 



Eusirus longipes, Boock, Crust, amph. bor. & arct. p. 77. 



Syn. : Eusirus lielvotiiv, Sp. Bate. 

 » — bidens, Heller. 



Body compai-atively slender, and less compressed tlian in the 

 preceding species, with only a very slight indication of a dorsal carina. 

 Each of the 2 anterior segments of metasome produced at the end to a well- 

 marked, posteriorly-pointing, acute projection. Cephalon about the length of 

 the first 2 segments of mesosome combined, lateral corners obtusely truncated 

 at the tip. First pair of coxal plates rather broad in their outer part and 

 having, like the 2 succeeding pairs, 2 small serrations at the infero-posteal 

 corner; 4th pair about as deep as the corresponding segment, posterior 

 projection rather sliort and blunt. Last pair of epimeral plates of metasome 

 having the posterior edge evenly curved and throughout coarsely serrated. 

 Eyes very large, occupying the whole height of the cephalon in front, and 

 oblong reniform in shape, pigment bright red. Superior antennse rather 



