326 



succeeding pairs much larger, and provided on the edges with dense tufts of 

 slender bristles, basal joint but little expanded, raeral joint comparatively 

 large and compressed, dactylus slender and elongated. Last pair of pereiopoda 

 of the usual structure, having the basal joint rather expanded and the outer 

 joints edged with tufts of small spines. Last pair of uropoda scarcely reaching 

 beyond the others, rami longer than the basal part, narrowly lanceolate, and 

 edged with small spinules. Telson extremely small, oval quadrangular in 

 form, tip obtusely rounded. Body pellucid, with a tinge of pale flesh-colour. 

 Length of adult female 11 mm. 



Eemarlts. This form was first described by Prof. Lilljeborg from a 

 single specimen found at Molde, west coast of Norway. It is easely recog- 

 nized from any of the other (Ediceridge, both by its outer habitus and by 

 several well-marked structural details. The male has not yet been observed. 



Occurrence. I have met with this pretty form rather sparingly in a 

 few places off the west coast of Norway, as also in the Trondhjemsfjord, in 

 depths varying from 50 to 300 fathoms. It extends northwards to the Lofo- 

 ten Isles, but has never been found off the coast of Finmark. Out of Norway 

 it has not yet been recorded. 



Gen. 10. Halimedon, Boeck, 18'<0. 

 Syu.: Westwoodilla, Sp. Bate. 



Form of body resembling that in the genus Monoculodes. Cephalou 

 having the frontal part more or less produced and defined from the lateral 

 corners by a deep sinus, rostral projection short and acute. Coxal plates of 

 middle size, and exhibiting much the same appearance as in the said genus. 

 Eyes distinct, placed close together above at the end of the frontal part of 

 the cephalon. Superior antennae rather slender and, as a rule, shorter than 

 the inferior, flagellum of the latter in male greatly elongated. Anterior lip 

 nearly trapezoidal in form, lateral edges obtusely angulated on the middle; 

 posterior lip comparatively large, with the inner lobes well defined. Mandi- 

 bles very strong, cutting part not distinctly dentated, molar expansion well 

 defined, palp very slender, with the middle joint strongly curved and partly 

 edged with short spinules. Maxillae nearly as in Monoculodes. Maxillipeds 

 comparatively poorly developed, masticatory lobes oblong in form and reaching 

 to the end of the antepenultimate joint of the palp, the latter much smaller 

 than in the genus Monoculodes. Gnathopoda subsimilar, and rather feeble in 



