CEUSTACEA ISOPODA OF THE ' POECUPINE ' EXPEDITION. 239 



jointed endopod, the spine-like second joint being such as would be expected rather in 

 the second pleopods than in the third. The fourth pleopods are very similar to the 

 third, except that the endopod is without the spine-like second joint and carries two 

 setules on its narrow but not acute apex ; there are two subapical spines on the 

 branchial exopod. 



The length of the specimens was about 8 mm. 



Taken by the 'Porcupine' Expedition in 1869, in 1360 fathoms, west of Donegal 

 (Station 19, lat. 54° 53' N., long. 10° 56' W.). 



The specific name makes a grateful allusion to a friendship, not only scientific but 

 personal, of forty years' standing, between the authors of the original memoir on the 

 Isopoda of this Expedition. 



VOL. ss. — PART IV. No. 2. — February, 1913 



