length of the body is said to be only 1.20 mm.: but I suppose that an exact 

 measurement may have been rendered difficult by the bad condition of the 

 solitary specimen observed by that author. 



As above stated, the present species was formerly confounded by me 

 with X. fallax (at that time recorded as X. borealis), to which species it cer- 

 tainly bears a close resemblance. It is however rather inferior in size and of 

 somewhat more slender form of body, differing moreover in the greater length 

 of the anterior antennae, and more particularly in the structure of the last pair 

 of legs, which more resembles that in the arctic species, X. borealis. In the 

 latter, however, these appendages are everywhere densely hirsute, and the 

 apical spines are much stronger, nearly claw-like. 



Occurrence. Adult female specimens of the present species have been 

 found in 3 different localities of the Norwegian coast, viz., at Riser, Stavanger, 

 and in the upper part of the Trondhjem Fjord. In all 3 localities it occurred 

 only occasionaly and in comparatively shallow water. 



Distribution. Mediterranean (Giesbrecht). 



Fam. Stephidae. 



Gen. Stephos, Scott. 



Remarks. Two well-defined species of this genus have been de- 

 scribed in Vol. IV of the present work. A 3rd species is now added, to 

 be described below. 



2. Stephos minor, Scott. 



(PL II). 



Stephos minor, T. Scott, Tenth Ann. Report of the Fishery Board for Scotland, Part III, p. 245, 



PI. VIII, figs. 113. 



Specific Characters. Female. Body resembling in shape that of S. 

 Scotti G. O. Sars, the anterior division being regularly elliptical in outline and 

 evenly vaulted dorsally; greatest width about half the length. Cephalic segment 

 very large, with the front obtusely truncated and exhibiting no trace of rostral 

 filaments. Lateral parts of last trunkal segment perfectly symmetrical and not 



