THE CRUSTACEA OF NEW JERSEY. 407 



deflexed, two rounded lobes separated by shallow notch. Upper 

 edge of orbit with two short and inconspicuous fissures, lower 

 edge with deep rounded sinus outside and two lobes, of which 

 inner and smaller slightly more advanced than outer. Basal 

 antennal joint broad antl in contact with front, flagellum stand- 

 ing in orbital hiatus. Ridge on endostome which defines efferent 

 branchial channel well marked, continued to edge of epistome. 

 Chelipeds massive and rounded, unequal in both sexes. Abdo- 

 men in male five- jointed. 



Similar to Biipanopcus and related genera, but differs in the 

 oval and nearly smooth carapace, without ridges, and by its 

 palatal ridge. One species on our shores. 



Eurytium limosum (Say). 

 Plate 124. 



Cancer liniosa Say, Joiirn. Acad. Nat. Sci. Phila., I, pt. i, 1818, p. 446. Muddy 



places of our southern coast. 

 fGrapsus limosus Rafinesque, Amer. Month. Mag. Crit. Rev., II, Nov. 1817, 



p. 42. Sea-shores of Long Island. 

 Panopcus limosus Milne-Edwards, Hist. Nat. Crust.. I, 1834, P- 404- Coasts 



of North America. 

 . White, Cat. Crust. Brit. Mus., XXV, 1847, p. 18. North America (Say's 



material). 

 Panopcus limosum De Kay, N. Y. Fauna, Crust., VI, 1844, p. 5. New York, 



New Jersey and Virginia. 

 Eurytium limosum Kingsley. Proc. Acad. Nat. Sci. Phila., 1878, p. 319. New 



York to Florida. 

 • A. Milne-Edwards, Miss. Sci. Mex. Crust., V, 1878, p. 332, PI- 60, 



fig. 2. New York to Rio Janiero. 

 M. J. Rathbun, Amer. Nat., XXXIV, 1900, p. 138. Virginia province. 



Description. — Carapace very convex in transverse section, con- 

 tour very broadly hexagonal, length about two-thirds its width. 

 Surface apparently smooth though under a lens granulated, with 

 granules becoming coarser near frontal and antero-lateral edges. 

 Front much deflexed, very slightly advanced, formed of two 

 similar lobes divided by median notch and each lobe with broadly 

 convex edge as seen from above. Front about two-ninths width 

 of carapace, and divided on each external edge by veiy slight 



