14 BRITISH COPEPODA. 



H"., long. 12 25 J' W. ; and at 40 miles off the Skelligs ; 

 sparingly also in Kinsale Harbour. 



This species was described by Mr. Eobertson and 

 myself (loc. cit.) as the type of a new genus Microsetella; 

 but on further examination I find no sufficient grounds 

 to maintain its separation from Ectinosoma. The 

 general habit and appearance of the animal coincide 

 entirely with that genus ; but it is worthy of note, that, 

 while all other members of the genus seem to haunt 

 the bed of the sea, this has been found only near the 

 surface, being taken by the tow-net. I have never 

 noticed its occurrence amongst dredged material. 



The mouth organs being so extremely minute, I have 

 not succeeded in obtaining a satisfactory view of all of 

 them. There seems to be a mandible-palp, but I have 

 not been able to see it with sufficient distinctness to 

 describe or figure it ; and the same may be said of 

 the maxillae. 



Genus 3. ZOSIME, BoecJc (1872). 



Anterior antennae 6 -jointed, very short and stout ; 

 posterior 2-branched, accessory branch 2-jointed; 

 mandible-palp composed of a large basal portion and 

 two small branches. First pair of foot-jaws having 

 three marginal setiferous digits; second pair small, 

 3-jointed, simple, terminating in a few setae. First 

 pair of feet having the outer branch composed of 

 three, the inner of two joints; both branches of 



