REVISED REPORT ON L.M.B.C. COPEPODA. 191 
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 papillee 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 antenne 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 wing 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 more 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 wings of a butterfly. 
Family HARPACTICIDA. 
Longipedia coronata, Claus. (Pl. XVIII, fig. 7.) 
Length 1.25 mm. One of the commonest of British 
