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- 
