64 HISTORY OF BRITISH CRUSTACEA. 



coast. Most of the species burrow among the sand, for 

 which they are well adapted by their peculiar structure. 



Gen. 20. ATELECYCLUS * Leach. 



Carapace wide, nearly circular, arcuated in front, and 

 contracted behind ; the edges with many teeth. The pits 

 in which the antennae are placed, longitudinal ; the front 

 toothed. Fore legs strong, short. Abdomen of male of five 

 distinct joints, that of the female of seven, the last nearly 

 as large as the preceding, and reaching nearly to the mouth. 



Atelecyclus septemdentatus, Mont, sp.t — Carapace 

 almost smooth on the stomachal region, armed on its la- 

 tero -anterior margins with teeth, alternately large and mode- 

 rate. Hairs on the legs very long and silky. 



In deep water on various parts of the coast from Shet- 

 land to Cornwall ; it was first found by Montagu on the 

 coast of Devonshire. On the Cornish coast it is very com- 

 mon. Mr. Couch remarks that this species must abound 

 at the depth of twenty to fifty fathoms, as he has found 

 thirty in the stomach of a single Cod, and almost every Bay, 

 opened for several days in succession, was found to contain 



* AreATjs, imperfect ; kvkXos, a circle. 



*r Cancer (Hippa) septerndentatus, Mont.; Atelecyclus heterodon, Leach. 



