AMPIllLOCUUS 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. 



