397 



ramus unarmed; both rami in male edged interiorly with strong ciliated setae. 

 Telson nearly attaining the length of the nrosome, and about twice as long 

 as it is broad at the base, outer part rapidly tapering, tip minutely bidentate. 

 Colour dark yellowish, without any pigmentary ornament. Length of adult 

 female 6 mm., of male about the same. 



Remarks. The present species, the type of the genus, is easily 

 distinguishable from any of the other Syrrlioida by its very broad sub- 

 depressed and angular body, as also by the peculiar shape of the cephalon. 

 It is also fairly distinguishable in this respect from the 2nd species of 

 the genus. 



Occurrence. - Though nowhere in any abundance, I have met with 

 this peculiar Amphipod in several places, both off the south and west coasts 

 of Norway, as also in the Trondhjemsfjord. It is a true deep-water form, 

 only occurring in depths ranging from 80 to 300 fathoms. According to 

 Boeck, it extends northwards to the Lofoten Isles (Skraaven). Out of Norway, 

 it has not yet been recorded. 



4. Bruzelia tuberculata, G. 0. Sars. 



(PI. 139, fig. 2). 

 Bruzelia tuberculata, G. Sars, Oversigt af Norges Crustaceer I, p. 95, PL 4, fig. 7. 



Body rather stout and compact, though not nearly so broad as in 

 the type species. All the segments of mesosome, except the 2 foremost, and 

 those of metasome, elevated dorsally to obtuse tuberculiform projections some- 

 what increasing in size posteriorly, that of last segment somewhat gibbous in 

 form. Inferior edges of the segments of mesosome forming together a rather 

 conspicuous lateral keel, which is also continued on the 2 anterior segments 

 of metasome, terminating in each of them with an angular projection of 

 their posterior edge. Urosome smooth above. Cephalon large and deep, 

 with the upper contour forming a strong and perfectly even curve to the tip 

 of the rostrum, the latter almost perpendicularly deflexed, and acuminate, 

 reaching somewhat beyond the end of the basal joint of the superior antennas, 

 lateral lobes of cephalon broadly rounded. Coxal plates comparatively small, 

 and not nearly so deep as the corresponding segments, otherwise rather 

 resembling those in the type species. Last pair of epimeral plates of meta- 

 some produced at the lateral corners to a strongly recurved, nearly hook- 

 like projection, the inferior edge of which is coarsely serrated. Eyes replaced 

 by a rounded patch of whitish pigment, situated in the upper part of 

 the cephalon, at the base of the rostrum. Superior antennae (in female) 

 scarcely attaining 1 A of the length of the body, joints of the peduncle suc- 



51 Crustacea. 



