22 



Gen. 6. CerviniOpSiS, G-. 0. Sars, n, 



Generic Characters. General form of body about as in Cervinia. Cephalo- 

 some, however, comparatively larger and imperfectly defined from the 1st pedigerous 

 segment, its lateral parts rather deep, partly including between them the oral 

 appendages ; rostral plate large and broad at the base. Epimeral plates of the 

 3 succeeding segments slightly angular. Genital segment in female with a well- 

 marked transversal suture in the middle dorsally, and produced on each side of 

 the suture to a recurved spiniform projection. Caudal rami very narrow, linear, 

 and contiguous along their whole length, apical setse of normal appearance. An- 

 terior antennae very robust, clavate, 6-articulate, and clothed with strong, partly 

 spiniform setse, one of them, issuing from the end of the 4th joint, being trans- 

 formed in to a large, almost fusiform appendage curving backwards and clothed along 

 one of the edges witb long cilia, this joint and the 2 outer ones very short and less 

 distinctly defined. Posterior antennae less robust than in Cervinia, outer ramus 

 of larger size, 4-articulate. Oral parts on the whole resembling in structure those 

 in Cervinia. Natatory legs with both rami 3-articulate and of about equal size. 

 Last pair of legs with the distal joint slender, linear, proximal joint quite short 

 and without any inner expansion. Male unknown. 



Remarks. This new genus is somewhat intermediate in character between 

 Cervinia and Eucanuella, agreeing in some points more closely with the former, 

 in others with the latter. ^'|From both of them it differs conspicuously in the 

 structure of the anterior antennae, and the peculiar appearance of the caudsl rami, 

 which are so closely squeezed together, that they look like a single appendage. 

 Off the Norwegian coast occur 2 closely allied species, to be described below. 



10. Cerviniopsis clavicornis, G. 0. Sars, n. sp. 



(PI. XII & XIII, fig. 1). 



Specific Characters. Female. Body moderately slender, with the anterior 

 division somewhat depressed behind and widening in front. Cephalic segment 

 rather large and deep, exceeding in length the 4 succeeding segments combined; 

 rostral plate broadly triangular and slightly deflexed. Last segment of metasome 

 with a distinct dentiform projection on each side. Urosome (including the caudal 

 rami) not quite as long as the anterior division ; genital segment with the lateral 

 spiniform projections very strong and prominent. Last caudal segment abruptly 

 contracted towards the end, anal opercle semilunar. Caudal rami slightly exceeding 



