82 HISTORY OF BRITISH CRUSTACEA. 



and groceries brought to their door." Mr. Gosse describes 

 how this is managed. All the joints of the external pedi- 

 palps are fringed with hair which curves inwards. Mr. 

 Gosse thus proceeds : — " Watching a Broad-claw beneath 

 a stone close to the side of my tank, I noticed that his long 

 antennae were continually flirted about ; these are doubtless 

 sensitive organs of touch, or some analogous sense, which 

 inform the animal of the presence, and perhaps of the na- 

 ture, of objects within reach. At the same time I remarked 

 that the outer pedipalps were employed alternately in mak- 

 ing casts, being thrown out deliberately, but without inter- 

 mission, and drawn in, exactly in the manner of the fringed 

 hand of a Barnacle, of which both the organ and the action 

 strongly reminded me. I looked at this more closely with 

 the aid of a lens ; each foot-jaw formed a perfect spoon of 

 hairs, which at every cast expanded and partly closed. That 

 you may understand this better, I must say that the foot- 

 jaw resembles a sickle in form, being composed of five joints, 

 of which the last four are curved like the blade of that im- 

 plement. Each of these joints is set along its inner edge 

 with a row of parallel bristles, of which those of the last 

 joint arch out in a semicircle, continuing the curve of the 

 limb ; the rest of the bristles are curved parallel or concen- 



