PORCELLANADyE. 



and obtusely carinated ; the fingers, in the adult, touching 

 only at the extremity, slightly tortuous ; the smaller hand 

 differs from the larger in being much more strongly cari- 

 nated and grooved ; the fingers are hairy on the inner edge, 

 and the immovable one bifid at the extremity. The re- 

 maining feet are slender, and scarcely hairy at any period. 

 The abdomen is broad, smooth, and without hair. 



The colour of the carapace varies very much ; it is gene- 

 rally pale red, frequently with irregular markings of dark 

 reddish brown, in other specimens of bright red. 



The ordinary length of the carapace is from two lines to 

 two and a half. 



This is a very pretty and a very common species. It is 

 found under stones a little beyond low-water mark, and is 

 very often brought up in great numbers with the oyster 

 dredge. 



I believe that the Cancer longicornis of Pennant, C. 

 hexapus of Herbst, Pisidia Linnaeana of Leach, P. longicor- 

 nis of the same author, Porcettana Leacldi of Gray, and P. 

 acanthocheles of Couch, are one and the same species, vary- 

 ing only according to age and sex. 



