538 



longer than the carpal, and hut sparingly setons, daetylus comparatively 

 short and thin. Last pair of nropoda with the rami suljeijual in length, 

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

 spiniform. Telson about twice as long as it is l)road at tlie hase, and but 

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

 terminal lobes unequally l)identate at tlie tip, and each carrying 2 apical 

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

 attaining 7 mm, of male al)Out the same. 



Itemarks. — This form \\'as detected during the Norwegian Xorth 

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

 Crustacea of that Expedition as LiJJjcborgia (eqvicornis. It is an easily 

 recognizable form, the male sex especiall}' being very easily distinguished by 

 the peculiar forcipate structure of tlie 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 50 — 100 fathoms. 



Distribution. Stat. 31, 224 and 273 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 jjlates 

 in some cases very small, in others rather dee]). Cephalon without any rostrum, 

 and liaving 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, trnathopoda more or less 

 une([ual, one of the pairs being peculiarly modified in the male. Pereiopoda 

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

 in length, and having tlie 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 

 ])art of the intestine. 



licmarJcs. — The present family includes the 3 subfamilies of Boeck: 

 Lcptochcirince, Microdcittopin(c, and Photincc. Finding it quite impossible to 



