96 BRITISH COPEPODA. 
dage which springs from the apex cf the third, is 
short, broad, and curved ; the anterior antenna of the 
female (fig. 2) has the second joint developed into a very 
large, subquadrate swelling, while the last two joints 
are much more slender and form a strong claw-like 
appendage, the last joint having also a subsidiary 
spine at the base. Sete of the posterior antenne 
(fig. 4) very strong and spine-like; secondary branch 
l-jointed, of moderate size, and having four sete. 
Hand of the lower foot-jaw ovate, with a slender ter- 
minal claw. Inner branch of the first foot (fig. 7) 
rather longer than the outer, 2-jomted, terminating in 
two long setze, the longest of which has an apical tuft 
of spreading, root-like hairs; the outer branch has 
three setz, one of which also is tufted at the 
apex. The second foot is shorter than the three 
following pairs, and is much more slenderly spined ; 
inner branch of the second pair (fig. 8) slender, not 
much longer than the first joint of the outer branch, 
2-jointed, the first jomt extremely short, the second | 
having one marginal and two apical sete, all of about 
equal length, and finely plumose beyond the middle. 
Inner branch of the third foot robust. (fig. 9), the two 
joints subequal, bearing at the apex one long terminal 
spine and two sete, the shorter of which is plumose 
(these appendages are stouter in the male than in the 
female); the terminal spines of the outer branch are 
very short and thick. ‘The fourth pair (fig. 10) has 
the inner branch rudimentary, 2-jointed, and provided 
with one stout apical seta and two shorter and more 
slender; the second, third, and fourth pairs are of 
