280 



184. Normanella tenuifurea, G. 0. Sars, n. sp. 



(PI. CXC1V, fig. 1). 



Specific Characters. Female. Body comparatively more slender than in 

 the type species and more evenly attenuated behind. Cephalic segment large, 

 attaining about the length of the 4 succeeding segments combined, rostral plate, 

 however, smaller than in N. minuta, and obtuse at the tip. Caudal rami much 

 narrower and more produced than in that species, exceeding in length the anal 

 segment, and more than 3 times as long as they are broad, outer edge finely 

 ciliated in its proximal half, apical setae normal. Antennae and oral parts about 

 as in N. minuta. 1st pair of legs likewise of a very similar structure, though 

 having the terminal joint of the outer ramus comparatively shorter, scarcely longer 

 than the middle joint. Natatory legs scarcely different from those in the type 

 species. Last pair of legs, however, comparatively smaller, with the distal joint 

 less produced and somewhat tapering towards the end. 



Colour not yet ascertained. 



Length of adult female 0.48 mm. 



Remarks. The present form is closely allied to N. minuta, but is of 

 smaller size, and moreover differs conspicuously in the shape of the rostral plate 

 and in the much narrower and more produced caudal rami. 



Occurrence. Some few specimens of this form were picked up from a 

 sample taken at Bukken, south-west coast of Norway, from a depth of about 20 

 fathoms. 



185. Normanella mueronata, G. 0. Sars, n. sp. 



(PI. CXCIV, fig. 2). 



Specific Characters. Female. Body on the whole more strongly built 

 than in the 2 preceding species, though of a very similar appearance. Rostral 

 plate very prominent, terminating in a sharp mucroniform point. Last caudal 

 segment much shorter than the preceding one, anal opercle prominent, semi- 

 lunar, and coarsely denticulate. Caudal rami about twice as long as they are 

 broad, and exhibiting dorsally a well-marked longitudinal keel, middle apical seta 

 exceedingly strong, spiniform, not jointed at the base. Antennae, oral parts and 1st 

 pair of legs very similar to those appendages in the 2 preceding species. Natatory 

 legs comparatively larger. Last pair of legs likewise more fully developed, with 

 the inner expansion of proximal joint more produced, extending almost as far as 

 the distal joint. 



