DACTTLOPUS. 119 



in length from without inwards ; the inner branch is 

 stout, with two stout, curved, terminal claws, and one 

 long, plumose, marginal seta. The fifth foot (PI. 

 LVII, fig. 12) has a stout and broad basal joint, the 

 inner segment of which bears five setaa of unequal 

 length ; the second joint is of moderate size and has 

 about six unequal setse and a few small marginal hairs. 

 Length -^nd of an inch (I'l mm.). 



Mr. Norman has taken this species at Oban, and on 

 the fronds of Laminarice at Tobermory, and I have 

 myself found it not uncommonly on Laminaria sac- 

 charina at Sunderland ; Mr. Robertson has dredged it 

 in a depth of two to three fathoms off Douglas, Isle of 

 Man, and it occurred also in dredged material got by 

 Mr. Robertson and myself amongst the Scilly Islands, 

 in depths of twenty to forty fathoms. 



The extremely short, somewhat conical, and densely 

 setose antennas distinguish this species at a glance 

 from any other with which I am acquainted. 



7. DACTYLOPTTS MINUTUS. Plate LXVII, figs. 12 14. 



Dactylopus minutus, Clans. Die frei lebenden Copepoden, p. 126, 

 taf. xvi, figs. 14, 15 (1863). 



Body very slender ; rostrum long. Anterior antenna 

 (fig. 12) elongated, slender, 9- jointed ; second and 

 fourth joints much the longest ; last five joints (fla- 

 gellum) more slender than the rest and subequal. 

 Outer branch of the first foot (fig. 13) slender, about 

 two thirds as long as the first joint of the inner branch ; 



