found on the South Coast of Devonshire. 97 



thirty minute articulations : eyes fixed, sub-orbicular, sub-angu- 

 lated : arms two, small ; hands broad, flat, ovate, sub-chelefe- 

 rous, sub-crenated in front; fang smooth, long, hooked, closing 

 upon the crenated edge of the hand by the side of a blunt 

 tooth : legs ten, the two anterior pairs slender, the others strong, 

 and serrated with spines ; the thighs laminated, the posterior 

 pair remarkably large, and angulated in the last joint but one ; 

 the claws small : caudal fins slender, two pair jointed, bifid ; 

 above these a small, simple, bifid appendage. 



Length nearty an inch. 



Colour, when alive,yellowish-brown, turning afterwards to rufous. 



This species, though not so frequent as the 0. Saltatory is often- 

 times found on our sandy shores, possessing much of the same 

 habits as that insect, and like it is a leaper. Whether it remains 

 on shore at all seasons is uncertain, but I suspect it is only sub- 

 aquatic, never having taken it in the sea. 



The C. littoreus is doubtless the species figured by Baster as 

 above referred to, and which Gmelin has erroneously quoted for 

 the Linnean Cancer Pulea\ In the general appearance, as well 

 as habits, it approaches C. Saltator, especially in its protruded 

 jaws, though inferior in size : the antennae are also less ; but the 

 most obvious distinguishing characters are the large subchelefe- 

 rous hands, and angulated joints of the posterior pair of legs. 

 The hands of C. grossimanus most resemble those of this species ; 

 but even in that particular there are minute distinctions, besides 

 very material ones in other parts. 



Cancer Gammarus grossimanus. 



Tab. IV. Fig. 5. 



Body very slender, compressed, smooth, with eleven jpints,: 

 vol. ix. o antenna 



