16 



some gravelly sand, at Hvalor, outside the Christiania Fjord, from a few fathoms' 

 depth. According to the statements of both M. Hesse and W. Mtiller, this form 

 is generally found in shells occupied by the common hermit-crab, Eupagurus 

 bernhardus. I have myself, however, failed to detect any specimens under such 

 circumstances, nor has this been done by Th. Scott. 



Distribution. French coast (Hesse), Scottish coast (Scott). 



Gen. 4. Camiella, Scott, 1893. 



Generic Characters. Body nearly cylindrical in form, with very thin and 

 flexible integuments. Cephalosome distinctly denned from the 1st segment of the 

 metasome, its lateral parts not very deep, rostrum well developed, narrow lingui- 

 form. Epimeral plates of the pedigerous segments small, rounded. Genital seg- 

 ment in female exhibiting in the middle dorsally a well-marked transversal suture, 

 lateral denticles wanting; that in male conspicuously dilated, and produced at the 

 end below to 2 acute projections comprising between them a somewhat hollowed 

 area. Anal opercle simple, rounded. Caudal rami more or less elongated and 

 greatly divergent, apical setae of moderate length, outer edge with a small seta 

 about in the middle. Anterior antennae resembling in structure those in SHIIH- 

 ristes, though somewhat more robust; those in male less dilated at the end. 

 Posterior antennae with the outer 2 joints of the inner ramus imperfectly 

 defined, outer ramus very powerful, 7-articulate. Oral parts on the whole built 

 upon the same type as in the 2 preceding genera. Natatory legs rather strongly 

 built, with the outer corner of the joints more or less produced; inner ramus of 

 2nd pair of normal appearance in both sexes. Last pair of legs, as in Sunaristes, 

 rudimentary. Ovisac double. 



Remarks. As observed by Th. Scott, this genus is closely related to 

 Sunaristes, though exhibiting some differences, which make it advisable to keep 

 it apart. One of these differences, not referred to by that author, though indi- 

 cated in the figure of the animal given, consists in the complete separation of the 

 1st pedigerous segment from the cephalosorne, a character very rarely found in 

 the group in question. Among other differences may be named the distinct 

 transversal suture occurring in the middle of the dorsal face of the genital seg- 

 ment in the female, and the somewhat different structure of the posterior antennae, 

 natatory legs and caudal rami. Two nearly-allied species of this genus occur off 

 the Norwegian coast. 



