239 



tip narrowly truncated ; 3rd pair rather expanded distally ; 4th pair scarcely 

 as large as the 2 preceding pairs combined, distal edge obliquely curved, 

 and nearly angular below the middle. Last pair of epimeral plates of 

 metasome much produced at the lateral corners. Eyes rather large, rounded, 

 visual elements imperfectly developed, pigment light red Antennae very 

 elongated and slender, the superior ones considerably exceeding half the 

 length of the body, 1st joint of the peduncle about as long as the cephalon, 

 2nd considerably longer and narrower, ilagellum about twice the length of 

 the peduncle. Inferior antennee fully as long as the superior, with the 

 2 outer joints of the peduncle very elongated and slender, subequal. Gnatho- 

 poda somewhat resembling those in S. marina; the anterior ones being much 

 smaller than the posterior, with the propodos rather narrow, and scarcely 

 broader than the carpus. Posterior gnathopoda in female comparatively 

 less powerfiil than in the said species, propodos oblong obpyriform, gradually 

 tapering from the base to the tip, palm very oblique, and not defined 

 posteriorly by any distinct angle, its edge irregularly serrated, some of the 

 anterior serrations being more projecting, and besides armed in its hind 

 part with 3 small spinules. Same legs in male much larger, propodos 

 narrow oblong, and somewhat curved, palm slightly concave in the middle, 

 and densely hairy, without exhibiting any trace of spinules or denticles, 

 except in its most anterior part, which forms a laminar expansion irregularly 

 dentated at the edge, the lower denticle being rather large, and defined 

 above b3^ a deep sinus; dactylus very strong, and finely hairy on the inner 

 edge. Pereiopoda much more slender and elongated than in the 2 preceding 

 species, the meral joint being in all pairs very narrow and scarcely at all 

 produced at the end, basal joint of last pair rather broad, rounded oval, 

 with the posterior edge boldly curved in the middle. Last pair of uropoda 

 with the basal joint much longer than the other 2 combined, and armed 

 with 8 denticles. Telson oblong oval, nearly twice as long as it is broad, 

 and armed with 3 pairs of dorsal denticles, outer part tapering to an 

 obtuse point. Body of whitish colour, banded with irregular, light-red 

 patches; ova in the marsupial pouch, as also the ovarian sacs, of a beautiful 

 violaceous hue. Length of adult female S'/a mm. 



Beniarks. — Though nearly allied to S. marina, this species is at 

 once distinguished by the much more slender form of its body, the large 

 light red eyes, the elongated and slender antennse, and the likewise very 

 slender pereiopoda. 



Occurrence. — The species is a true deep-water form, only occurring 

 in greater depths, ranging from 80 to 150 fathoms. I have met with it in 

 two localities off the west coast of Norway, Korshavn and Bekkervig, and 



