231 



outer i)art, distal edge narrowly rounded, and finely denticulated; 4th pair 

 very large, fully twice as deep as the corresponding segment. Last pair 

 of epimeral plates of metasome slightly produced at the lateral corners, 

 without however forming any dentiform projection. Eyes rather small, 

 rounded, with the visual elements few in number, and imperfectly developed, 

 pigment light red, with a whitish coating. Antenuge very slender, the 

 superior ones somewhat longer than the cephalon and the first 2 segments 

 of mesosome combined, 2nd joint of the peduncle much elongated, and 

 considerably exceeding in length the 1st, flagellum shorter than the peduncle, 

 and composed of about 7 articulations. Inferior antennae neaidy half as 

 long again as the superior, the 2 outer joints of the peduncle rather 

 elongated and narrow, subequal, flagellum about half the length of the 

 peduncle. Gnathopoda very slender and feeble, the posterior ones somewhat 

 more elongated than the anterior, propodos in both pairs quite simple, linear 

 in form, and considerably shorter than the carpus, the latter provided along 

 the lower edge with numerous fascicles of small bristles, and scarcely at all 

 produced at the end inferiorly. Pereiopoda very slender and elongated, 

 basal joint of the 3 posterior pairs large and laminar. Last pair of uropoda 

 rather elongated, though scarcely reaching beyond the 1st pair, rami naked, 

 and considerably shorter than the basal part. Telson of moderate size, not 

 extending to the end of the latter, conically tapering to a simple acuminate 

 point. Colour uniformly whitish, without any trace of pigmentary spots, 

 sometimes with a faint reddish tinge. Length of adult female reaching 7 mm. 



Rc))iarJ,:s. — The present species, established by Boeck, is readily 

 distinguishable from either of the 2 preceding ones, by the strongly projecting 

 and acuminate rostrum, as also by the very slender from of the antennae, 

 gnathopoda and pereiopoda. In the living state it is, moreover, at once 

 recognized by the nniform whitish colour of the body. 



Occurrence. — I have met with this form rather abundantly in several 

 places off the west coast of Norway, thus at Hvitingso, in the Hardanger- 

 fjord, and at Christiansuud, as also in the Trondhjemsfjord, and at Apelvaer, 

 Namdal. It extends northwards to Hasvig, west Finmark. Like G. ahijmcola, 

 it is a true deep-water form, occurring only in greater depths, from 100 to 

 200 fathoms, especiall}^ in the region of the deep, sea corals. Out of Norway- 

 it has not yet been recorded. 



