THE CRUSTACEA OF NEW JERSEY. 457 



these places series of specimens were taken. I also found it at 

 Lewes in Delaware, and at Chincoteague in Virginia. It some- 

 times occurs associated with Uca pugilator. Mr. W. T. Davis 

 says it is common along all of the meadow creeks of Staten 

 Island, N. Y. 



Genus OCYPODE Fabricius. 



The Ghost Crabs. 



Ocypode Fabricius, Entom. Syst. Suppl., 1798, pp. 312, 347. Type Cancer 



ceratophthalnms Pallas, first species. 

 Ocypoda, Ocypete, auct. 

 Monolepis Say, Journ. Acad. Nat. Sci. Phila., I, 1817, p. 155. Type Monolepis 



inermis Say, first species. 



Orbits very large and open, extending all along front edge 

 on either side of narrow and deflexed front. Eye-stalks large, 

 and large cornese covering much of lower surface of this 

 terminal joint. Chelipeds in adult male unequal and well 

 developed, palm with vertical series of short raised lines or 

 tubercles on inner surface which form stridulating ridge. 



Crabs living on sandy beaches, where they dig holes in the 

 sand, though occasionally retreat to the water when disturbed. 

 They are protected by their very swift movements and their 

 coloration closely resembling that of the sand. 



Ocypode albicans (Bosc). 



Plates 148 and 149. 

 Ghost Crab. 



Ocypoda albicans Bosc, Hist. Nat. Crust., I, 1802, p. 196 (nee PI. 4, fig. i). 



Carolina coast. 

 Ocypode albicans Latreille, Hist. Nat. Crust., VI, 1803, p. 48. Carolina. 



M. J. Rathbun, Amer. Nat., XXXIV. igoo, p. 585, figs. 1-2 (carapace 



and chela). Cape Cod to Gulf of Mexico. 



M. J. Rathbun, Occas. Papers Boston Soc. N. Hist., VII, 1905, p. i. 



Massachusetts and Rhode Island. 



Fowler, Proc. Acad. Nat. Sci. Phila., 191 1, p. 3. Beaches of Dela- 



