35 



water, it remains floating upon it, and may thus easily be picked up from any 

 freshly-taken sample. 



Distribution. British Isles (Brady, Scott), Spitsbergen (Scott). 



20. Eetinosoma Normani, Scott. 



(PL XIX, fig. 2). 



Eetinosoma Normani, Th. & Scott, Eevision, c., p. 435, PL 36, figs. 21, 29, 39; PL 37, figs. 12, 



26, 34, 51 ; PI. 38, figs. 5, 18, 42, 45. 



Specific Characters. Female. Body somewhat more robust than in E. 

 melaniceps, with the cephalic segment, seen dorsally, evenly contracted in front, 

 rostral plate short aud obtuse at the tip. A bright red pigmentary patch present 

 on each side of the cephalic segment, just within the lateral edge and between 

 the insertions of the anterior and posterior antennae. Caudal rami of about the 

 same appearance as in E. melaniceps, but with the innermost apical seta consider- 

 ably shorter. Anterior antenna? likewise very similar in structure, though perhaps 

 a little shorter. Anterior lip with an acute recurved projection in front. Last 

 pair of legs not unlike those in E. melaniceps, distal joint, however, comparatively 

 narrower, with the innermost apical spine longer, extending about as far as the 

 outermost, appendicular bristle, as in E. melaniceps, issuing from the margin 

 between the 2 outermost spines ; inner expansion of proximal joint with the outer 

 spine more slender and only very slightly lanceolate. 



Colour uniformly whitish grey. 



Length of adult female 0.55 mm. 



Remarks. The above-described form is unquestionably that recorded by 

 Messrs. Th. & A. Scott under the name of E. Normani. At first I believed it to 

 be E. erythrops of Brady, on account of the very conspicuous red pigmentary 

 patches occurring within the lateral edges of the cephalic segment in front. But 

 Messrs. Th. & A. Scott describe as Brady's species a very different form, un- 

 known to me, though apparently referable to the Fauna of Norway, having been 

 recorded by one of these authors from Finmark. The species here under discussion 

 is nearly allied to E. melaniceps, though at once distinguished by its uniform 

 colour and the very conspicuous red ocular patches in front. It is also rather 

 inferior in size. 



Occurrence. Only 2 specimens of this form have hitherto come under 

 my notice. They were both taken in the upper part of the Christiania Fjord 



