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 antennse are placed, longitudinal ; the front 
toothed. Fore leo;s 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. 
Atelecycltjs 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 Eay, 
opened for several days in succession, was found to contain 
* A imperfect ; kvkAos, a circle. 
f Cancer (Hippa) septemdentatus, Mont. ; Atelecyclus heterodon, Leach. 
