LAOPHGONTE. ra 
external branch very slender, less than half the length 
of first jot of outer branch; outer branch long and 
moderately stout, with a long curved claw. Second, 
third, and fourth pairs very slender, elongated (fig. 6), 
outer branch twice as long as the inner, the last joint 
as long as the preceding two. [Fifth pair of feet 
(fig. 7) longand narrow; lateral segments of the basal 
joint not much developed; inner segment 4-, outer 1- 
setose , second joint attenuated, with ciliated margins ; 
the apex bearing two, and the outer margin three, long 
sete. Length sth of an inch (52 mm.). 
Apparently a rare species. Two or three specimens 
only were seen in dredged material from a depth of 
thirty fathoms, off Staiths and Robin Hood’s Bay, 
Yorkshire coast: one or two specimens, perhaps refer- 
able to L. thoracica, occur in a series of Copepoda 
taken by Mr. Norman at Oban, in a depth of twelve to 
sixteen fathoms. ‘The characters of the antenna, 
second foot-jaws, and fifth pair of feet amply distin- 
guish it from any other species. I am indebted to 
the kindness of the late M. Boeck for drawings of L. 
thoracica, and can scarcely entertain any doubt that 
they refer to the species here described, though the 
swimmine-feet of the Norwegian species do not appear 
in M. Boeck’s figures to be quite so slender, nor the 
fifth pair of feet so profusely setose; this last con- 
dition, however, may very easily have arisen from 
accidental mutilation. Females only have occurred 
amongst my specimens. 
