SEA-FISHERIES LABORATORY. 67 



claw as long as the joint to which it is attached. Both 

 branches of the first pair of swimming feet two-jointed, 

 outer branches small, the joints subequal and reaching to 

 about the middle of the basal joint of the inner branch ; 

 inner branches long and slender, basal joint nearly twice 

 the length of the entire outer branch and fully seven 

 times longer than broad, a moderately long seta springs 

 from near the base of the inner margin. Second joint 

 short and narrow, fully one-fourth the length of the basal 

 joint, furnished at its apex with a short curved seta, a seta 

 of considerable length springs from near the middle of the 

 inner margin. Outer branches of the second, third and 

 fourth pairs of feet elongate, three-jointed, inner branches 

 short and narrow, one-jointed, in the fourth pair the inner 

 branches are only about one-third the length of the basal 

 joint of the outer branches and furnished at the apex with 

 three short setae. Fifth pair of feet small, one branched 

 and divided into two distinct portions, an inner which is 

 produced into an elongate curved spiniform apex devoid 

 of setae and an outer tubercle-like process which arises 

 from near the base of the elongate portion furnished with 

 two short stout setae and one long slender hair. Caudal 

 stylets elongate narrow, slightly divergent, tapering to an 

 acute apex and about twice the length of the last 

 abdominal segment ; on the inner margin of each stylet at 

 a distance of about one-third from the apex there arises 

 a single seta which is fully two-thirds the length of the 

 animal and having a slighly thickened base. Anal 

 operculum semi-circular in shape and produced into three 

 spines, a median and two lateral. 



Habitat, 1 mile off Spanish Head, Isle of Man, in 

 neritic material, dredged from a depth of 16 fathoms. 

 Only two specimens were observed. 



Remarks. — This species though placed in the genus 



