AMPHILOCHUS MANUDENS. 
181 
and slender, more than usually bent, and reaches so far 
that, when closed, it impinges against and antagonizes 
with the produced extremity of the wrist, thus forming 
a complex hand. The second pair of legs are longer and 
stouter than the preceding; the wrist has the antero- 
inferior angle more elongated ; the hand is triangular, 
the lower margin gradually diverging from the upper, 
the upper being the longer, and extending, in a sharp 
tooth-like process, beyond the articulation between the 
hand and the finger; the palm is slightly convex, and 
somewhat crenulated ; the finger is sharp and curved, and 
the extremity reaches the ciliated apex of the produced 
wrist. The remaining appendages offer no material cha- 
racter. They are rather slender, and all nearly of the 
same length. The middle caudal plate is lanceolate. 
This animal, of which we have only seen a single speci- 
men, was sent to us by our valued correspondent, Mr. 
David Robertson, of Glasgow, who states that he had seen 
a second individual. It was taken by him from the roots 
of Laminaria, in a few fathoms of water, at C umbrae, 
Scotland. Its colour, when it reached us, was claret-red. 
