215 



sensory hairs; accessory appendage extremely small, uniarticulate, with 2 

 unequal apical setae. Inferior antennas a little longer than the superior, 

 peduncle rather stout, with the 2 outer joints subequal in length, and having, 

 anteriorly, fascicles of short bristles, flagellum half as long again as the 

 peduncle. Anterior gnathopoda a little stronger than the posterior, carpus 

 in both rather dilated, and forming at the end, inferiorly, a rounded setous 

 lobe, propodos somewhat shorter and much narrower, oblong in form and 

 without any distinctly defined palm, dactylus short, spinous on the inner 

 edge. Anterior pairs of pereiopoda comparatively small, scarcely exceeding 

 the length of the gnathopoda; the 3 posterior pairs much more elongated, and 

 edged on both margins with short spines, basal joint narrow quadrangular, 

 having outside an elevated diagonal ridge, dactylus slender lanceolate, spinous 

 at the edges. Last pair of uropoda somewhat projecting beyond the 1st 

 pair, basal part very short, both rami lanceolate, uniarticulate, with small 

 marginal spines, the inner a little longer than the outer, and having a longi- 

 tudinal ridge. Telson but little longer than it is broad at the base, cleft 

 extending somewhat beyond the middle, and gradually widening distally, 

 terminal lobes divaricate, and obscurely crenulated at the edges. Colour 

 uniformly pale yellowish. Length of adult female reaching 8 mm. 



Remarks. This is the only, as yet, known species of the genus and 

 may easily be recognized from the other Amphilochidce both by its general 

 habitus, and by the structure of the several appendages. 



Occurrence. - I have met with this form in several places off the 

 west coast of Norway, thus in the Hardangerfjord, and at Christiansnnd, as 

 also in the Trondhjemsfjord. It extends northwards to the Lofoten Isles, and 

 occurs also off the Finmark coast as far east as Vadse, where I collected 

 it many years ago, in considerable numbers. It is a true deep water form, 

 occurring, as a rule, only in depths from 100 to 300 fathoms. 



Distribution. - - Stat. 87 of the Norwegian North Atl. Exp., lying 

 outside the great fishing banks of the west coast of Norway. 



Gen. 2. AmphilochuS, Sp. Bate, 1862- 



Body comparatively short and stout, somewhat compressed, with rather 

 firm integuments. Cephalon produced in front to a curved acuminate rostrum, 

 lateral corners distinctly projecting, postantennal corners obsolete. First pair 

 of coxal plates very small and partly concealed, the 3 succeeding pairs large 



