34 BRITISH COPEPODA. 



Male. Anterior antenna (fig. 3) constricted between 

 the third and fourth joints; fourth joint armed with 

 a very robust rod-like appendage (fig 3 a) ; first joint 

 of the inner branch of the first foot much thickened 

 (fig. 9), bearing a fringe of long spine-like setae on the 

 inner margin and one much longer apical seta ; the basal 

 portion of the foot has a large darkly-coloured chitinous 

 tubercle on its inner margin, just above the origin of 

 the inner branch (fig. 9 a). The second and third 

 joints of the inner branch of the second foot (fig. 11) 

 are converted into a long, chitinous, bayonet -like 

 spine, which is tuberculated near the base. Fifth 

 pair of feet (fig. 13) smaller and more angular than in 

 the female, the basal segment having only two principal 

 setae ; those on the outer margin of the second joint 

 short and stout. The tail setae in the male are not so 

 stout as those of the female. Length ^th of an inch 

 (1 mm.). 



This fine species was first noticed by my friend the 

 Rev. Alfred Merle Norman amongst Entomostraca 

 washed off the fronds of Laminarice at Tobermory ; in 

 this gathering it occurred abundantly. I have since 

 dredged it in several places, but nowhere in great 

 numbers : Clew Bay (Ireland) ten fathoms; off 

 Hartlepool five fathoms; and off Marsden (Durham) 

 thirty fathoms; Portincross (Ayrshire) fifteen fathoms; 

 Ventry Bay, Ireland (Mr. E. C. Davison). 



The specific name hispida is the MS. name given 

 by Mr. Norman to his specimens, and on that account 

 is adopted here. 



