88 BRITISH COPEPODA. 



abdominal segments. Length ^Vth of an inch. (1*5 

 mm.). 



A few (three) specimens only of this very remarkable 

 copepod were taken by the Rev. Alfred Merle Norman 

 in the dredge at Oban, in July, 1877. Its distinctive 

 characters, especially as regards the antennae and feet, 

 will be recognised at a glance by reference to the 

 Plate, and need not be further dwelt upon. The 

 animal appears to be colourless or nearly so ; all Mr. 

 Norman's specimens are of the same sex, probably 

 females, though none of them bear ova. 



Fam. 3. CYCLOPID.^, Baird in part. 



Body elongated; cephalothorax ovate and usually 

 sharply separated from the abdomen, which is much 

 more slender. Anterior antennae of moderate length, 

 scarcely ever longer than the cephalothorax; those of 

 the male alike at both sides and adapted for clasping. 

 Posterior antennse 4- jointed and destitute of a secondary 

 branch. Palps of mandibles and maxillae well developed, 

 or in some cases rudimentary. Foot-jaws nearly similar 

 to those of the Calanidce, but usually less strongly deve- 

 loped. First four pairs of feet alike or nearly so, 

 2-branched and adapted for swimming; never in any 

 case for prehension. Fifth pair rudimentary, alike in 

 both sexes. Heart wanting. Eye consisting of two 

 coalescent lenses. Two ovisacs in the female. 



The family Cyclopidce differs from Calanidce chiefly 



