PODOCERTJS. 
435 
but consisting of three or four very long articuli ; some 
of the hairs upon the distal extremity of eacli articulus 
attaining a strong spine-like condition, and becoming 
shorter and stronger towards the apex of the organ, 
where also they become curved or hooked. The second 
pair of legs have the hand much longer than that be- 
longing to the first pair. The first two pairs of walking 
legs are very short and robust, and the thighs are 
generally broadly dilated. The third pair are also short, 
and have the lobes of the coxa very large. The last 
pair of caudal appendages are double branched, the 
branches are very short, and one of them (the inner) 
is furnished with two or three hook-like spines. 
This genus, as w T ell as that of Jassa, was established 
by Dr. Leach, but, after a careful consideration of the 
meagre descriptions of these two genera, as well as an 
examination of the specimens preserved in the British 
Museum, we have not been able to discover any 
character to distinguish the two groups. In this we 
are the more confirmed from the fact that specimens of 
each genus were mingled together, as also some totally 
distinct from either. Dana’s description o Cratophium 
also appears to be identical with this genus, and we can 
only account for that clear observer founding it as a 
distinct genus from the fact that Dr. Leach’s description 
is not sufficient for identification without the assistance 
of specimens. 
This genus appears to be more generally distributed 
in the northern than in the southern hemisphere, although 
one species was taken by Dana on the coast of Brazil, and 
another in the Eastern Archipelago. 
f f 2 
