70 GENUS OCYPODIE. 



Thorax entirely covered with granulse, edge with 

 small crenate teeth, which are obsolete on the base and 

 near the clypeus; about one sixth part of the front elonga- 

 ted, rounded at tip, inflected and adprCvSsed to the flice, 

 remaining portion of the front sinuated, anterior angles 

 sallient, acute, lower eje-brow with larger crenate tetth, 

 and on the cheeks each side of the mouth the granular 

 resemble short obtuse spines, a curved line arises from a 

 fissure in the middle of the lower eye -lid and terminates 

 at the inferior inner angle; feet compressed, very hairy, sur- 

 face smooth, sometimes granulate in the females; thighs 

 margined above, the posterior ones with a marginal line 

 beneath also, last joint with an impressed longitudinal line 

 each side, tarsi acute, striate with elevated lines; Ante- 

 rior feet beneath glabrous, on each side dentate, above 

 somewhat rugose; wrist scabrous, with a spine on the in- 

 ner angle; hands suboval, compressed, scabrous, above 

 dentate, and on the edge beneath serrate, fingers nearly as 

 long as the hand, with elevated lines; last segment of the 

 abdomen and tail in the male longer than broad. 



Breadth of thorax one inch and two-fifths. 



This species excavates holes for its dwelling of the 

 depth of three or four feet in the sand of the sea beach, just 

 above the influence of the surf, whence it makes occasional 

 sorties, principally at night, in pursuit of food; runs with 

 considerable swiftness when surprised or dug out of its 

 hole, holdiPig up its arms in a menacing attitude. 



Thelatter end of October or early in November, ac- 

 cording to the state of the weather, they leave their resi- 

 dence near the water, and retire a distance from it, where 

 they may hybernate in security; having found a suitable 

 situation^ they form a hole of similar appearance to that 



