50.2 APPENDIX. 



poda slender, cylindrical, subequal ; first pair having the 

 propodos nearly as long as the carpus ; inferior angle longi- 

 tudinally produced to a fine point, slightly curved ; dactylos 

 as long as and parallel with the digital process of the pro- 

 podos : second pair rather more slender than the first, with 

 the propodos nearly as long as the carpus, and furnished with 

 a copious brush of hairs ; dactylos minute, simple, almost 

 lost in the cilia of the preceding joint. Periopoda short and 

 robust. 



Specimens of this species have been taken by the British 

 Association Dredging Committee in the Shetlands, and by 

 Mr. G. Brady, on a specimen of Echinus esculentus, off the 

 Isle of Man. 



