22 



Gen. 6. CerviniOpSlS, <4. 0. Sars, n. 



Generic Characters. General innn of body about as in Cervinia. (Yphalo- 

 sorae, however, comparatively larger and imperfectly defined from tin- 1 st pedigerous 

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

 appendages rostral plate largr and broad at the base, Kpimeral plate. of the 

 HICCeeding >egments slightl\ angular. Uenital segment in female with a well- 

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

 the Miture to a recurved spinilonu projection. Caudal rami very narrow, linear, 

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

 tei-ior antenna' very rohust. clavate. 6-articulate, and clothed with strong, partly 

 spmiform seta-, one of them, issuing from the end of the 4th joint, being tran^- 

 I'ormed in to a large, almost fusiform appendage curving backwards and clothed along 

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

 distinctly defined. Posterior antennae less robust than in CiTriniti. outer ramus 

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

 in Cervinia. Natatory legs with both rami .'{-articulate and of about equal si/.e. 

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

 and without any inner expansion. Male unknown. 



A 1 - ///'///*.- --This new genus is somewhat intermediate in character between 

 Cervinia and Em-mini'lln. agreeing in some points more closely with the former, 

 in others with the latter. ^Krom both of them it differs conspicuously in the 

 structure of the anterior antennae, and the peculiar appearance of the caud;l 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. (). Sars, n. sp. 



(PI. XII X XIII. flg. li. 



Sjirci/ir ('lini-iicti'r*. 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 1 succeeding segments combined; 

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

 with a distinct dentiform projection on each side. I'rosome (including the caudal 

 rami) not quite as Ion- as the anterior division: genital segment with the lateral 

 spinilonn projections \ery strong and prominent. Last caudal segment abruptly 

 contracted towards the end, anal opercle semilunar. Caudal rami slightly e\c< rding 



