88 BRITISH COPEPODA. 



stricted in the middle, which is the narrowest part of 

 the animal, posterior margins of the segments finely 

 denticulated, but not produced on the dor sum, except 

 the last abdominal segment, which has a posterior 

 spine ; rostrum short; caudal segments (fig. 22) shorter 

 than the last abdominal joint, and bearing three apical 

 setse, the largest of which is not much longer than the 

 last segment. Anterior antennae (fig. 13) 7 -jointed, 

 densely setiferous on the outer margin, first three 

 joints larger than the rest, which are short and sub- 

 equal. Secondary branch of the posterior antenna 

 small (fig. 14), 1-jointed, and bearing four seta3. 

 Mandible slender (fig. 15), palp slender, with two small 

 1-jointed branches. Second foot-jaw (fig. 18) small 

 and slender. Inner branch of first pair of feet (fig. 19) 

 long and slender, the second joint bearing two curved 

 apical setse, only one fourth as long as the first joint, 

 which has ciliated margins and a long marginal seta 

 near the apex. Fifth pair of feet (fig. 21) composed of 

 a large, subtriangular basal joint, and a smaller external 

 joint, both of which bear several long marginal setaB ; 

 the internal portion of the first joint is largely de- 

 veloped, and reaches as far as the apex of the second. 

 Length -gVth of an inch (*68 mm). 



This species may perhaps have been often over- 

 looked, owing to its small size and its general resem- 

 blance to Cletodes and Laophonte. I have notes of its 

 occurrence as follows : At New Grimsby and Por- 

 cressa Bay, Scilly, fourteen to twenty fathoms ; Clew 

 Bay ; off Marsden and Hartlepool (Durham coast), ten 

 to thirty fathoms. 



