CAMPECOPEA IlIRSUTA. • 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 maxillee 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, wliich we consider to be the 

 inner maxillag, 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 w'here the sun appears to drain 

 off all moisture. 



F F ^ 



