430 REPORT OF NEW JERSEY STATE MUSEUM. 



Stebbing, Hist. Recent. Crust. (Int. Sci. Ser. LXXIV), 1893, p. 58. 



North America. 



M. J. Rathbun, Amer. Nat., XXXIV, igoo, p. 134. Cape Cod and 



north, south to Gulf of Mexico. 



M. J. Rathbun, Occas. Papers Boston Soc. Nat. Hist., VII, 1905, p. 9. 



New England. 



Paulmier, 58th An. Rep. N. Y. State Mus., IV, 1904 (1905), p. 139, 



fig. New York City. 



Mayer, Sea Shore Life, 1906, p. 102, fig. 71. South Carolina to Lab- 



rador. 

 Platycarciniis irroratus Milne-Edwards, Hist. Nat. Crust., I, 1834, p. 414. 

 North American coasts. 



De Kay, N. Y. Fauna, Crust., VI, 1844, p. 7. Long Island and Rhode 



Island. 



Gibbes, Proc. Acad. Nat. Sci. Phila., 1850, p. 24 (name only). 



Leidy, Journ. Acad. Nat. Sci. Phila., (2) III, 1855, p. 149. Great 



Egg Harbor. N. J. 



Verrill, Rep. U. S. F. Com., I., 1871-72 (1873), p. 312 (under large 



rocks near low-water mark) ; p. 530, PL 8, fig. 2)7 (Young). 

 Cancer sayi De Kay, 1. c, p. 7. New York. 

 Leidy, 1. c. Great Egg Harbor, N. J. 



Description. — Carapace well convex, surface uneven and dor- 

 sal groove not evident or very obscure. Contour of carapace 

 broadly convex anteriorly, front well set off from anterior lateral 

 region, sides sloping very obliquely as serrated, then emarginated 

 posterior edges little inclined to comparatively narrow posterior 

 edge. Front with five distinct nearly equal similar tubercles or 

 depressed spines, so arranged to form an obtuse triangular con- 

 tour, with median spine at apex. Outermost of frontal spines 

 scarcely elevated to form wall of orbit. No very distinct notch 

 to posterior median edge of orbit, as viewed above. Front lateral 

 edges of carapace with eleven obtuse flattened serrae, more or 

 less rounded, outermost or ninth directed outward almost at 

 right angles. Beading of fine tubercles along edges of anterior 

 serrse not very distinct, though continuous posterior edges of 

 carapace with better development of minute uniform ones. 

 Upper surface of carapace finely granular, and none of granules 

 especially enlarged. Orbit small, rounded, and lower infra- 

 orbital edge projects more forward, though similar to outer- 

 most of frontal serrae, immediately below, and so visible as viewed 

 above. 



