116 BRITISH COPEPODA. 
sparingly in the undermentioned localities off the coasts 
of Durham and Yorkshire. In forty-five fathoms 
twenty miles off Sunderland, amongst muddy sand, 
and in thirty to thirty-five fathoms off Robin Hood’s 
Bay, Staiths, and Red Cliff. 
Allied to D. longirostris, Claus, and D. minutus, 
Claus, as well as to D. Stromu, Baird, but differing 
from these, especially in the structure of the antenne, 
the first and fifth pairs of feet, and the tail sete. 
5. Dacrynorus FLavus, Claus. Plate LVI, figs. 1—11. 
Dactylopus flavus, Claus. Die Copepoden-Fauna von Nizza, p. 28, 
taf. 111, figs. 13—16 (1866). 
Body depressed, robust; abdomen short and broad ; 
the second, third, and fourth segments—and in the 
male the first segment also—pectinate on the posterior 
margins ; rostrum rounded off. Anterior antenne 6- 
jointed, much shorter than first body segment, joints 
subequal (fig. 2); in the male (fig. 3) the fourth joint 
forms a vesiculiform swelling. Inner branch of poste- 
rior antenna 2-jointed. The hand of the second foot-jaw 
(fig. 4) is long and slender, ciliated on the inner margin 
and provided with one large seta, one also at the 
apex of the preceding joint. The outer branch of the 
first swimming-foot has the middle joint scarcely at 
all larger than the other two (fig. 5), the entire length 
of the branch being less than that of the first joint of 
the inner branch; the apical spines of the first and 
