DACTYLOPUS. Ill 



in D. Stromii. The setae of the fifth feet (fig. 16) 

 are, however, more irregular in length than in D. 

 Stromii. Length ^ 8 -th of an inch ('9 mm.). 



A few specimens which I refer to this species were 

 dredged off Portincross, Ayrshire, in a depth of fifteen 

 fathoms, but noth withstanding the careful examination 

 which Dr. Glaus has bestowed upon it, with the result 

 of separating it specifically from D. Stromii, I must 

 confess myself unable to see the propriety of that 

 step. The preferable course would, I think, be to 

 consider the present as a well-marked variety of what 

 must be admitted to be a variable species. 



3. DACTYLOPUS STKOMII, Baird. PL LY, figs. 1 13. 



Canthocamptus Stromii, Baird. Brit. En torn. p. 208, pi. xxvii, 

 fig. 3 (not Canthocamptus Stromii of 

 Lilljeborg) ^1850). 



Cyclops Baird. Mag. Zool. and Botany (1837). 



Nauplius Phillippi. Archiv fiir Naturgesch., 



p. 69 (1843). 



Dactylopus cinctus, Glaus. Die Copepoden-Fauna von Nizza, 

 p. 27, taf. iii, figs. 812 (1866). 



Rostrum long and curved; anterior antennae 8- 

 jointed, slender, plentifully beset with not very long 

 hairs; the fourth joint bearing a long, curved, rod- 

 like "olfactory" appendage (fig. 1 a), the first four joints 

 (peduncle) stouter than the rest, last joint long and 

 slender ; in the male (fig. 2) the first, second, and fourth 

 joints are tumid, the third small and narrow, and there 



