116 



teiinse in male modified in a quite similar manner as in the preceding species. 

 Epistomal plate not quite so large as in that species and obtusely rounded 

 in front, Anterior gnathopoda with the basal joint considerably longer than 

 the remainder part of the leg, propodos about the length of the carpus and 

 slightly dilated distally. Posterior gnathopoda less slender, carpus consider- 

 ably expanded in its outer part, propodos somewhat stronger than in the 

 preceding species and provided dorsally with 3 rows of setae. Posterior per- 

 eiopoda rather feeble in structure, 3rd pair very small, with the basal joint 

 nearly elliptical and more broad than long, that of the last pair very much 

 expanded and broadly oval in form; meral joint in none of the legs expanded. 

 Last pair of uropoda in female with the rami somewhat broader than in the 

 preceding species, the inner one scarcely longer than the basal joint of the outer, 

 the latter with 2 bristles on the inner edge. Telson oblong triangular, 

 scarcely twice as long as broad at the base; cleft narrow and extending far 

 beyond the middle. Colour bright carneous red. Length of adult female 

 11 mm. 



Remarks. This form, which was erroneously referred by Boeck to 

 his genus Orcliomfiue, is evidently congeneric with the preceding species, 

 agreeing as it does pretty well in all essential points. Yet it is very easily 

 recognized from that species by several well marked characters, viz., by the 

 unusually high and compact body, the very conspicuous lateral umboniform 

 prominence, the much feebler structure of the posterior pereiopoda, and finally 

 by the colour of the body. 



Occurrence. Unlike the preceding species, this is evidently a genuine 

 northern form, rarely occurring out of the Arctic region. I have found 

 it in several places both off the coast of Finmark and off the Lofoten isles 

 in depths varying from 30 to 100 fathoms. The southernmost place where I 

 have met with it is at Bronosund in Nordland. 



Distribution. - - Arctic Ocean: Spitsbergen (Uot ; s), the White Sea 

 (Jarzynsky), Stat. 4S and 124 of the Norwegian North Atlantic Expedition. 



Gen. 30. Euonyx, Norman, 



Body robust, with rather firm integuments and large coxal. plates. 

 Superior antennae of moderate size and provided with a well developed acces- 

 sory appendage. Inferior antenna? in female inurh longer than the superior. 



