108 BRITISH COPEPODA. 



I have had no opportunity of comparing my speci- 

 mens with Koch's figures ; but they seem to agree in 

 almost all points with Sars' description, the only 

 important difference which I can discover referring to 

 the fifth foot; Sars says, " articulus basalis minimus," 

 whereas in my specimens the joints are about equal in 

 size, and neither of them very small. 



(B. Anterior antennce 14-jointed.) 



6. CYCLOPS INSIGNIS, Glaus. PL XXI, figs. 1 9. 



Cyclops insignis, Glaus. Das Genus Cyclops (Weigmann's 

 Archiv, Band xxiii), p. 209, t. xi, figs. 812 ; 

 Die frei-lebenden Gopepoden, p. 101 (1857). 



Sars. Oversigt Ferskvandscopepoder, p. 38 



(1863). 



Fric. Die Ki-ustenthiere Bohmens, p. 222, 



fig. 17 (1871). 



Lubbockii, Brady. Nat. Hist. Trans. Northumberland 

 and Durham, vol. iii, p. 127, pi. iv, figs. 

 18(1868). 



Anterior antennae (fig. 1) rather shorter than the 

 first body-segment, 14-jointed, the eighth joint being 

 incompletely divided; first and eighth joints larger 

 than the rest; last two joints moderately long and 

 slender. Posterior antennas moderately robust. Man- 

 dibles (fig. 7) dilated at the a,pex; teeth broad and 

 strong. Anterior foot-jaws moderately robust and bear- 

 ing several plumose setae ; posterior foot-jaws strong, 

 with a powerful terminal claw. Fifth foot (fig. 6) 

 2 -jointed, first joint short and bearing a single seta ; 



