52 BRITISH COPEPOPA. 



vulvar aperture of the first abdominal ring. There 

 appears never to be more than one of these tubes 

 attached to the same female, whereas in the case of 

 Temora and Diaptomus several of the spermatophores 

 may be seen depending side by side from the vulva of 

 the same individual. This difference, together with the 

 peculiarly hard and rigid character of the attached body 

 in the case of Canthocamptus, has induced Dr. Baird 

 and other authors to doubt the spermatic nature of 

 the tubes. I think, however, there need be no doubt 

 on the matter ; the tubes may indeed be seen in the 

 interior of the male organism before their extrusion, 

 just as is constantly noticed in the males of other 

 Copepods. 



2. CANTHOCAMPTUS HIBERNICUS, nov. sp. PI. XLYI, 



figs. 112. 



Anterior antenna (PI. XL VI, fig 3) of the female 

 slender, 8-jointed, about as long as the first body-seg- 

 ment, and much like that of the preceding species. Inner 

 branch of the second antenna (fig. 4) very small, 1- 

 jointed. Posterior foot-jaw (fig. 7) having a broad hand 

 armed with a long apical claw. Inner branch of the first 

 pair of feet (fig. 8) scarcely twice as long as the outer ; 

 first joint longer than the entire outer Jbranch, and 

 nearly twice as long as the united second and third 

 joints, both of which are extremely small. Inner 

 branches of the second, third, and fourth pairs shorter 

 than the outer, and 3 jointed, the first joint being very 



