272 
GAMMARIDJE. 
fourth the length of the animal, having the flagellum 
not more than half as long as the peduncle. The inferior 
antennae are not quite so long as, and more slender than, 
the superior, and also have a short flagellum. The first 
pair of legs are tolerably long ; the wrist is stouter than 
the hand, and has the infero-distal margin produced to a 
sharp free point, reaching quite to the extremity of the 
hand, where it performs the part of a thumb, thus with 
the finger it makes a tolerably perfect hut complex 
grasping organ, the hand itself being narrow and the 
finger short. The second pair of legs are about the same 
length as the first, but the wrist is not so broad as the 
hand, and does not reach beyond half its length ; the 
hand is of an oval form and much broader than that of 
the first pair, it is convex upon the outer and concave 
upon the inner surface, and when folded up forms a 
strong shield defending the first pair of legs and the 
anterior organs of the body ; the palm is slightly convex, 
even, and continuous with the posterior half of the 
inferior margin, from which its limit is not defined ; the 
finger is long and reaches as far as the inferior extremity 
of the wrist, with which it assists in forming a complex 
claw of a less perfect character than that of the first pair 
of legs. The walking legs are nearly of the same uniform 
length and size. The posterior pair of caudal appendages 
have the branches of the same length, they are some- 
what leaf-like in form, reaching further than the ex- 
tremity of the penultimate, but not further than that of 
the antepenultimate pair. The central tail-piece is long, 
lanceolate, and convex upon the upper surface. 
The animal, when alive, possesses a delicate pink or 
flesh-coloured tinge. It was first taken by Montagu, 
many years since, on the coast of Devon. We have 
received it from the Moray Frith through the kindness of 
