55 



and cleft almost to the base. Colour yellowish, with dark brown intestine 

 and without distinct pigmentary spots. Length of adult female 5 1 /-- in m. 



Remarks. Although very closely related to the preceding species, 

 this form may be readily distinguished, not only by its inferior size, but bv 

 the different proportions of the joints of the several legs and by its uniform 

 yellowish colour. 



Occurrence. The only locality in which I have hitherto met with 

 this species is at Be] an, at the entrance of the Trondhjemsfjord. It occnrivd 

 here not rarely in a depth of 30 40 fathoms. According to Bruzelius it has 

 also been found on the coast of Finmark. 



Distribution. - - Coast of Bohuslan (Bruzelius). 



Gen. 13. Hippomedon, Boeck 1870. 



Body slender and compressed, with rather deep though narrow coxal 

 plates. Anterior part of mesosome (comprising the 4 anterior segments) 

 scarcely as long as the posterior part. Metasome powerfully developed, with 

 large epimeral plates, those of the last pair terminating with a sharp upturned 

 hook-like projection. Cephalon comparatively small; eyes imperfectly developed. 

 Superior antennae with the joints of the peduncle more or less produced at 

 the end anteriorly, flagellum of moderate size with the 1st joint very 

 large, accessory appendage comparatively small. Inferior antennae much 

 longer than the superior; flagellum in both sexes, but especially in the male, 

 very slender and composed of numerous articulations; flagella of both pairs 

 of antennas in male provided with distinct calceolae. Epistome not at all 

 projecting. Anterior lip rather small and rounded in front. Posterior lip 

 strongly chitinized, with short and blunt lateral corners. Mandibles short 

 and strong, with the molar expansion rather large and massive, truncated at 

 the tip, palp very elongated and originating nearer the end of the mandible 

 than does the latter. First pair of maxillae with the masticatory lobe strongly 

 incurved and only armed with a limited number of denticulated spines, the lia-al 

 lobe short and oval, with 2 curved plumose setae at the tip; palp with the terminal 

 joint gradually expanded distally and armed at the obliquely trum-aled tip 

 with a dense series of short spines. Second pair of maxilla 1 with the li.l.rs 

 short and broad, the inner one setous both at the tip and the inner edge. 

 Maxillipeds comparatively short, masticatory lobe large, with the inner edge 

 straight and armed with a dense row of blunt denticles; pal]) robust, only 



