16 



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

 depth. According to the statements of both M. Eesse and \\". Midler, this form 

 i- i. r fii< -rally found in shells occupied by the common lu'rinit-crah. /'///"/</////'. 

 l I'liltm-iln*. I have myself. ho\\e\er. failed to detect any specimens under such 

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



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



Gen. I. Canuella, Scott, 1893. 



i,,, i, nr Chiii'iictt r^. Body nearly cylindrical in form, with very thin and 

 flexible internments. Ophalosome distinctly defined from the 1st segment of the 



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

 lorm. Kpimcral plates .f the pcdir'erous segments small, rounded. Genital seg- 

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

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

 ei:d he]o\\ to -2 acute projections comprising between them a somewhat hollowed 

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

 rivatly diverrent. apical setae of moderate length. outer edge with a small seta 

 about in the middle. Anterior antenna- resembling in structure those in Smui- 

 though somewhat more robust; those in male le>s dilated at the end. 

 antenna' with the outer '2 joints of the inner ramus imperfectly 

 defined, outer ramus very powerful. 7-articulate. '. )ral 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 

 Jud pair of normal appearance in both sexes. Last pair ol le-js. as in Xttmiri*tr*. 

 rudimentary. Ovisac double. 



irl,-*. As observed by Th. Scott, this ^enus is closely related to 

 though exhibiting si ..... dillei-ences. which make it advisable to keep 

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

 cated in the figure of the animal riven, consi-ts in the complete separation of the 

 1-t pediirerous seLiment from the cephalosome. a character \n-y rarely found in 

 the rruup in question. Amour oflu-r differences ma\ be named the distinct 

 transversal suture occurrinr in the middle of the dorsal face of' the genital ser- 

 ment in the female, and the somevv hat different sf ructure of the posterior antenna'. 

 natatory legs and caudal rami. T\\<> m-arly-aliieii species of this genus occur olV 

 the Norwegian coast. 



