REVISED REPORT ON L.M.B.C. COPEPODA. 187 
careful dissection of one failed to reveal the presence of 
posterior foot jaws, so if present any description of these 
appendages must await the capture of more specimens. 
Inner branch of first pair of swimming feet (fig. 8) two 
jointed, the inner side of apical jomt being produced into 
a long digit-shaped spine with rounded end. The outer 
branch of first pair and both branches of second, third, 
and fourth feet and of the fifth feet of male are all three 
jointed, the inner terminations of the first and second 
joints of the inner branches of the second and fourth feet 
(fig. 10) forming strong beak like spines. The fifth feet 
of the female (fig. 11) are two jointed, the second being 
more than twice the length of the first and bearing three 
lateral and three apical spinous sete. The fifth feet of 
the male (fig. 12) are alike and both three jointed. Abdo- 
men six jointed with sharply pointed lateral terminations 
to the second, third and fourth segments. Caudal stylets 
very long and narrow, swollen at the upper end and 
gradually widening to the base, with outer lateral sete one 
on each near the end and having several terminal sete. 
Two specimens only, a male and female of this remark- 
ably elegant but minute species were taken by the mud 
dredge at 39 fathoms in the Irish Sea about twelve miles 
out from Port Erm. I feel a peculiar pleasure in connec- 
ting the name of the genus with that of my friend Prof. 
Herdman. 
Family [V.—CyYcLoPIDz. ~ 
Outhona spinifrons, Boeck. (Pl. XVII, fig. 1.) 
Length 1 mm. Generally present in townet gather- 
ings throughout the year. It is easily recognized by its 
delicate whip hke antennze clothed with long setz. 
Cyclopina littoralis, Brady. (Pl. XVII, fig. 2.) 
Length 0.75 mm. Frequently found amongst sea-weeds 
between tide marks about Puffin Island. Though seldom 
