CAMPECOPHA HIRSUTA. 435 
armed on each side with a long curved and serrated oar, or 
fin-like outer division of the posterior lateral appendages, 
of which the inner is apparently obsolete. The sixth 
segment of the body is armed with a long posteriorly 
deflexed spine. The seventh segment of the body is very 
short ; the legs are terminated by a strong curved finger ; 
the extremity of the preceding joint being also produced 
into a point, so as to give the appearance of double 
claws to the leg. The outer maxille are of the usual 
form, and the foot-jaws have a large apical lobe, whilst 
the intermediate joints have their inner angles produced 
into rounded setose lobes. In the middle figure (e?) we 
have represented a structure which presented itself to us 
on dissecting the mouth, which we consider to be the 
inner maxilla, although differing from the ordinary form 
of those organs, which generally consist of three equal- 
sized membranous plates of identical form and structure, 
and with a similar ciliation at the tips. In figure P is 
represented the underside of the tail, with the omission 
of the delicate tail-feet or breathing-scales. The terminal 
segment of the tail is slightly carinated at its extremity. 
The species was found by Montagu on the coast of 
Devonshire. We have also taken it in some profusion 
at Torquay and Polperro, amongst the small dry fuci 
that exist on the surface of the rocks within the reach of 
the spray of the sea, but where the sun appears to drain 
off all moisture. 
