12 BBITISH OOPEPODA. 



sparingly amongst weeds near low-water mark at 

 St. Mary's, Scilly, and in a gathering taken from the 

 fronds of Laminarice in Shetland by the Rev. A. M. 

 Norman. Mr. Norman has also more recently (1877) 

 taken it at Oban. 



3. ECTINOSOMA ERYTHROPS, 110V. Sp. PI. XXXVI, figS. 



1117. 



Anterior antennse 6-jointed, mandibular palp having 

 only a single terminal seta. First foot-jaw (fig. 14) 

 slender, terminal claws long and slender, middle joint 

 of second foot-jaw having only one long marginal seta. 

 Swimming-feet destitute of marginal spines, their inner 

 branches more elongated than in the preceding species 

 (fig. 16). Fifth pair of feet (fig. 17) much shorter than 

 in the two preceding species, and having much longer 

 setae, the longest of which is at least three or four times 

 longer than the foot itself; basal segment having two 

 setae on its inner portion ; terminal segment small, 

 reaching not much beyond the inner portion of the 

 first segment and bearing three long apical setae. 

 The head (fig. 11) bears close to its anterior margin 

 two distinct, brilliantly red, eye- spots. Length, 4-9 th 

 of an inch ('65 mm.). 



A small, but apparently very distinct, species of 

 which I have seen only a few specimens, all of them 

 taken by the dredge in depths of from five to thirty 

 fathoms off the coasts of South Durham and North 

 Yorkshire. 



