538 



longer than the carpal, and but sparingly setous, dactylus comparatively 

 short and thin. Last pair of uropoda with the rami subequal in length, 

 inner one lanceolate, outer, much narrower, and having the terminal joint 

 spiniform. Telson about twice as long as it is broad at the base, and but 

 slightly tapering distally, cleft narrow and extending beyond the middle, 

 terminal lobes unequally bidentate at the tip, and each carrying 2 apical 

 spines. Colour uniformly pale yellow. Length of adult female scarcely 

 attaining 7 mm, of male about the same. 



Remarks. This form was detected during the Norwegian North 



Atlantic Expedition, and was described by the author in the account of the 

 Crustacea of that Expedition as Lilljeborgia ceqmcornis. It is an easily 

 recognizable form, the male sex especially being very easily distinguished by 

 the peculiar forcipate structure of the anterior gnathopoda. 



Occurrence. - The only place on the Norwegian coast, where I have 

 met with this form, is at Bugo in the Varangerfjord. It occurred here rather 

 sparingly in a depth of oO 100 fathoms. 



Distribution. Stat. 31, 224 and 27o of the Norwegian North Atlantic 

 Expedition (off Storeggen, Jan Mayen, the Barents Sea). 



Fam. 21. Photidae. 



Body more or less slender and perfectly smooth, with the coxal plates 

 in some cases very small, in others rather deep. Cephalon without any rostrum, 

 and having the lateral corners more or less produced. Eyes generally 

 distinctly developed. Antennae slender, with elongated peduncles, the inferior 

 ones, as a rule, more strongly built than the superior, the latter generally with 

 an accessory appendage, though this is sometimes wanting. Antennae in male of 

 same structure as in the female. Oral parts normal. Grnathopoda more or less 

 unequal, one of the pairs being peculiarly modified in the male. Pereiopoda 

 moderately slender, the 3 posterior pairs, as a rule, increasing successively 

 in length, and having the basal joint more or less expanded. Last pair of 

 uropoda generally small, and but little differing from the preceding pairs. 

 Telson more or less conspicuously tubular, receiving within it the terminal 

 part of the intestine. 



Remarks. The present family includes the 3 subfamilies of Boeck: 

 LeptocheirincBj Microdeutopincc, and Photince. Finding it quite impossible to 



