427 



base witli fascicles of delicate sensory filaments. Inferior antennae in female 

 a little longer than tlie superior, the last 2 joints of the peduncle about of 

 equal length, and edged anteriorly with distinct calceolse, flagellum scarcely 

 longer than those joints combined, and composed of about 14 articulations; 

 those of male much more elongated, with the flagellum very slender and 

 nearly twice the length of the peduncle. Guathopoda rather strong and 

 somewhat unequal in size, the posterior ones being the larger, propodos in 

 both pairs oblong oval in form, about twice as long as it is broad, palm 

 occupying nearly the whole length of the inferior edge, and defiued posteriorly 

 by a very slight angle bearing several slender spines. Pereiopoda comparatively 

 more slender than in the type species, with more elongated dactyli ; the 3 

 posterior pairs rapidly increasing in length, and having the basal joint 

 simple, oblong oval in form; last pair about equalling V< of the length of 

 tlie body. Last pair of uropoda with the rami nearly equal-sized and 

 subfoliaceous in shape, having the outer part abruptly tapering to a point, 

 marginal spinules small and few in number. Telson quite unarmed, and less 

 strongly attenuated distally, cleft very narrow, fissure-like, and extending 

 nearly to the middle of the telson. Body whitish, semipelluced, and variegated 

 with irregular, partly confluent patches of a clear, light-reddish pigment; 

 antennae, buccal area, and legs partly tinged with the same pigment. Length 

 of adult female scarcely exceeding 12 mm , that of male 10 mm. 



Eei)iayl:s. — The present species, established by Boeck, is easily 

 distinguishable from the preceding one by its comparatively more slender 

 and less strongly spined body, the short rostral projection, the different 

 shape of the coxal plates and of the basal joint of the posterior pairs of 

 pereiopoda, and finally, by the form of the telson and the uropoda. It is also 

 far inferior in size. Boeck most probably confounded this and the next 

 species; but his figures and description undoubtedly refer to the present form. 



Occurrence. — I have met with this species not unfrequently in 

 several places both off the south and west coasts of Norway, in depths 

 ranging from 50 to 100 fathoms. According to Boeck it extends northwards 

 to the Lofoten Isles, but it has not yet been observed off the Finmark coast. 



Distribution. — About the distribution af the species, it is at present 

 somewhat difficult to state anything with certainty, as most probably the 

 next species has generally been confounded with it. To judge from its 

 occurrence off the coast of Norway, it would seem on the whole to be a 

 more southern form than the former. 



