242 . 



flagellum scarcel}^ exceeding half the length of the peduncle. Gnathopoda 

 rather unequal both in size and structure ; the anterior ones mvach smaller 

 than the posterior, and of the usual form, the mei'al joint being produced 

 at the end inferiorly to a setiferous process, propodos about the length of 

 the carpus, though much broader, and nearly triangular in form, palm 

 distinctly defined, straight, and about the length of the hind margin. Posterior 

 gnathopoda in female moderately strong, propodos triangvilarly expanded, 

 and occupying about the third part of the length of the leg, palm about 

 the length of the hind margin, and defined posteriorly bj^ a somewhat 

 projecting angle armed with a few spinules, its edge slightly flexuous, and 

 distinctly denticulated in its anterior part, dactylus not very strong. 

 Pereiopoda comparatively short and stout, nearly naked, meral joint rather 

 expanded, and distinctly prod^iced at the end, basal joint of the 2 posterior 

 pairs of moderate size, oval in form, posterior edge smooth. Last pair of 

 uropoda with the basal joint rather large, exceeding the length of the 

 other 2 combined, and armed with 5 very minute denticles, terminal joint 

 comparatively small. Telson of moderate size, oblong oval in form, and 

 quite unarmed, outer part tapering to an obtuse point. Colour uniformly 

 whitish, without any trace of pigmentation; ova in the marsupial jjouch 

 bluish green. Length of adult female 8 mm. 



Remarlcs. — The nearest ally of this very distinct species would 

 seem to be S. monocul aides, from which however it is easily distinguishable, 

 not only by its mi;ch larger size, biit also by the rather different structure 

 of the several appendages of the body, and likewise by the uniformly 

 whitish colour. 



Occurrence. — I first found this form in a single place off the west 

 coast of Norway, Korshavn, where a few specimens were pi'ocured from a 

 depth of about 50 fathoms. Subsequently, I have met with it more 

 abundantly off the Nordland coast, at Tjoto, and a single s])ecimen of the 

 same form has also been collected at Tromse by Mr. Schneider. Out of 

 Norway, it has not yet been recorded. 



6. Stenothoe megacheir (Boeck). 



(PI. 83). 

 Metopa megacheir^ Boeck, Crust, amph. bor. & arct p. 63. 



Body comparatively slender, and rather compressed, with the coxal 

 plates not very large. Cephalon fully twice as long as the 1st segment of 

 mesosome, and somewhat produced in front, lateral corners very little 



