THE COPEPODA OF LIVERPOOL BAY. 193 
think that these points should constitute specific rather 
than generic differences when the other more important 
characters agree, and I therefore prefer to slightly modify 
an existing genus rather than make a new one. 
I have named. this species after the steamer ‘‘ Hyzna,”’ 
belonging to the Liverpool Salvage Association, who have 
on many occasions most courteously placed that vessel at 
the disposal of Professor Herdman for the work of the 
i MB.C. 
Family. HARPACTICIDA. 
Jonesiella hyewne, n. sp. (Pl. IX., figs. 1 to 10). 
Length 1-30th inch. Body ovate, of nearly equal thickness 
throughout; head and first thoracic segment coalescent. 
Rostrum (fig. 4) long and spatula like; rounded anteriorly. 
Anterior antenne (fig. 2) broad at base with cleft on each 
side near the base, then widening and surmounted by a 
tree-like crown, having a second segment at apex and 
several spinose and plumose sete. Posterior antenne 
(fig. 3) two branched, the outer branch being two jointed. 
The lower joint has two short plumose spines; the apical 
joint is edged on cuter side with short spines, and has 
several long spinose setze at the apex. The inner branch ~ 
is short (joints not made out), and is terminated by two 
long plumose setee. Mandibles (fig. 5) broad and strongly 
toothed; palp of one short stout joint and bearing several 
long and short spines. - First footjaw (fig. 6) much resem- 
bles that of Jonesiella fusifornis, Brady and Robertson. 
Second footjaw (fig. 7) two jomted, bearing a finely curved 
narrow clawed hand, the latter being jointed near the 
centre. The first joint has two or three short plumed 
spines at the apex; the second joint is finely ciliated on its 
inner margin. First pair of swimming feet (fig. 8) have 
three joints to each branch, the inner branch being rather 
13 
