158 



marginal setae few in number; 1st pair gradually widening distally; 5th 

 pair witli the posterior lobe rather deep. Metasome densely hairy above, 

 last pair of epimeral plates rounded at the lateral corners. Superior antennae 

 with only 2 large penicillate auditory setae at the end of the basal joint, 

 flagellum of moderate length and composed of 7 articulations, accessory appen- 

 dage a little shorter and 6-articulate. Inferior antennae of the usual structure. 

 Gnathopoda somewhat unequal in size, the posterior ones being considerably 

 more powerful than the anterior, hand in the former oblong oval, in the latter 

 triangular oval, palmar edge longer than the hind margin, especially in the 

 posterior pair, thumb-like process rather coarse. Penultimate pair of pereio- 

 poda exceeding half the length of the body, propodal joint much elongated 

 and provided on the upper edge with 4 recurved ciliated setae, dactylus very 

 slender, setiform; last pair with the basal joint rather broad, posterior expan- 

 sion transversely truncated below and exhibiting only a few indistinct serra- 

 tions. Last pair of uropoda comparatively slender, inner ramus a little shorter 

 than the basal joint of the outer, and bearing a single slender apical seta, 

 outer ramus with 5 spines exteriorly, terminal joint very small and tipped 

 by a slender seta. Lobes of telson rather narrow and somewhat diverging 

 in their outer part, tip rounded. Colour greyish white. Length of adult 

 female 6 mm. 



Remarks. This species is most nearly related to H. crenulata Boeck, 

 to be next described, but may lie easily distinguished, not only by its much 

 larger size, but also by the rather different shape and armature of the basal 

 joint of the last pair of pereiopoda. 



Occurrence. Last summer, I found 2 specimens of this pretty species 

 in the Trondhjemsfjord at Vennaes in a depth of 100 to 150 fathoms. Two 

 other specimens, exactly agreeing with the former, were contained in a collec- 

 tion of Amphipoda kindly sent to me for examination, from Prof. Loven. 



Distribution. Coast of Bohuslan (Stockholm Museum). 



11. Harpinia crenulata, Boeck. 



(PI. 55, fig. 2). 

 Harpinia crenulata, Boeck, Crust, arnphip. bor. & artica, p. 56. 



Body rather short and stout. Cephalon equalling in length the 3 

 anterior segments of mesosome combined, hood evenly vaulted and projecting 

 beyond the peduncle of the superior antennae. Coxal plates about as in 

 H. truncata, but with a smaller number of marginal setae. Metasome densely 

 hairy above; last pair of epimeral plates strongly rounded at the lateral 

 corners, and exhibiting below the middle of the posterior edge, a small sinus 



