60 



ated outside; last segment very small and deeply cleft. Caudal rami nearly 

 twice as long as they are broad, and each produced at the tip outside to a 

 dentiform projection; apical setse unusually short, the innermost but one scarcely 

 exceeding half the length of the urosome. Anterior antennce comparatively shorter 

 and stouter than in the 2 preceding species. Posterior antenna with the terminal 

 joint comparatively short and much dilated distally, spines of outer edge pro- 

 vided with short cilia on the one side. Mandibles, maxilla and anterior maxil- 

 lipeds about as in the other species. Posterior maxillipeds, however, considerably 

 stronger, with the hand oval in form, and the dactylus very coarse. First pair 

 of legs rather slender, distal joint of outer ramus scarcely widening at all towards 

 the end, apical claws with short cilia; inner ramus distinctly 3-articulate, last 2 

 joints small, but well defined, apical claws very strong. Natatory legs resembling 

 in structure those in the 2 preceding species, but with the innner ramus com- 

 paratively shorter. Last pair of legs very large, distal joint oblong oval in form 

 and densely hirsute; inner expansion of proximal joint lamellar, transversely 

 truncated at the tip, which is finely denticulate at the edge, and provided with 4 

 very unequal setse, the outermost rather small, the next much elongated, the 2 

 innermost very coarse and spiniform. 



Body of a dark yellow colour, with a broad reddish brown transverse 

 band across the back, occupying the dorsal parts of the 3 first free segments of 

 metasome. 



Length of adult female 1.40 mm. 



Remarks. I fully agree with Prof. Brady in saying that the identifica 

 by Glaus of this form with Sterope ovalis Goodsir, cannot properly be sanctioned; 

 and the name proposed by Brady is now also generally accepted by other authors. 

 It is an easily recognizable species, being much larger than any of the others, 

 and also differs conspicuously in the more elongated form of body. 



Occurrence. Only a few specimens of this form, all of them females, 

 have hitherto come under my notice. They were found off the west coast of 

 Norway, in depths varying from 20 to 50 fathoms. 



Distribution. British Isles (Brady), Heligoland (Glaus), Arctic Ocean west 

 of Spitsbergen (Scott), Polar islands north of Grinnell Land (2nd Fraui Expedition). 



