REVISED REPORT ON L.M.B.C. COPEPODA. 97 



The Cephalothorax has five segments the head segment 

 being distinct from the rest. The second and third seg- 

 ments have each a pair of dorsal papilla3 projecting laterally 

 and upwards, and the fourth has one larger dorsal papilla. 

 The abdomen is about equal in length to the rest of the 

 body and is composed of three segments each being about 

 twice as long as broad, and terminated like the female 

 with short caudal segments armed with hook spines. The 

 two pair of antennae are similar to those of the female as are 

 the other appendages and first four pair of swimming feet. 

 The fifth pair are however wanting in the female, while 

 the male possesses a pair of two jointed fifth feet each 

 terminated by a single seta. 



As was the case with the specimens examined by Brady 

 the wing-like expansions of the females we found were 

 somewhat lacerated from immersion in alcohol but their 

 general form and long pointed apices are very characteristic. 

 The terminal posterior wdng is decidedly larger than that 

 in Brady's drawing and though too lacerated to be certain 

 of its form, it affords indication of the three pointed 

 terminations figured from Hesse. The cephalothorax in 

 our female specimens is much moce robust than in Brady's 

 drawing the last body segment being the widest and filled 

 with ova. The first and second abdominal segments are 

 funnel shaped, the narrow extremity of which is the same 

 width as the two terminal segments which are of similar 

 size to those of the male. 



It is difficult to imagine any use to the animal of the 

 extraordinary appendages in the female so much resem- 

 bling in general appearance the wrings of a butterfly. 



Family Harpacticid^. 

 Longipedia coronata, Glaus. (PL XVIII, fig. 7.) 

 Length 1.25 mm. One of the commonest of British 



