18 BRITISH COPEPODA. 



short and armed with numerous setae of moderate 

 length. Lower foot-jaw (fig. 7) 3-jointed; first joint 

 short and stout, second rather longer and having a 

 pectinate series of small cilia near the middle ; last 

 joint very short and armed with three strong, curved, 

 and plumose setae at the apex. The outer margins of 

 all the joints of the first four pairs of feet (fig. 8) are 

 fringed with spines, and their longer setae have pec- 

 tinate margins. Fifth pair of feet small (fig. 9), the 

 basal joint triangular and bearing two long setae on 

 the inner and one on the outer angle ; second joint 

 smaller, subquadrangular, bearing four setae, two of 

 which are of equal length with those of the basal 

 joint ; the other two much shorter. 



I have seen only very few examples of this species, 

 not more than a dozen; these were taken off Porcressa 

 Bay (Scilly Islands) in a depth of twenty fathoms, and 

 off Hartlepool in twenty-five fathoms on a sandy 

 bottom. M. Boeck's specimens were found in com- 

 pany with the previous species, Zosime typica. 



There may, perhaps, be some doubt whether the 

 species here described is rightly referred to M. 

 Boeck's Brady a typica. In some points the two 

 appear to differ, the only important divergence being, 

 however, as to the number of joints on the inner 

 branch of the posterior antennae. But this is a point 

 upon which a mistake may very readily be made ; 

 indeed it is one by no means always easy of determi- 

 nation, even when attention is specially directed to it. 

 I regret that an insufficient supply of specimens has 

 prevented my satisfying myself as to this particular, 



