ORDER DECAPODA SESARMA. 15 



GENUS SESARMA. Say. 



Shield quadrilateral, elevated in front, where it is broad and curved downwards, reticulated 

 or granulated on the sides. Orbits deeply notched below their outer angle. Third joint 

 of the outer jaw-feet longer than the second, much longer than wide, ovate, slightly sub- 

 truncate in front, and having an oblique crest on its outer surface. Tarsi styliform, hairy, 

 and generally wanting spines. 



Sesarma cinerea. 



Cancer cinercus. Bosc, Hist. Nat. des Crustaces, Vol. 1, p. 204, pi. 6, fig. I. 

 Ocypode ( Sesarma) reticidatus. Say, Jour. Acad. Nat. Sc. Vol. 1, p. 73, pi. 4, fig. 6. 

 Sesarma cinerea. JIilne-Edwards, Hist. Nat. des Crust. Vol. 2, p. 75. 



Description. Shell somewhat longer in its transverse diameter, with numerous minute irre- 

 gular punctures, and with oblique scarcely elevated rugae on each side behind. Cheeks and 

 sides of the body with numerous parallel longitudinal lines of granules, surmounted at regu- 

 lar distances by perpendicular equal hairs ; beneath the lateral edge of the shield are about 

 six short ciliate curves, disposed in a longitudinal series. Front deeply hollowed in the mid- 

 dle. Thighs mucronate above near the tip, with minute aculea? behind, which are wanting on 

 the posterior ones. Tarsi striate with six ciliate lines. Hands subequal, scabrous, with a 

 moniliform edge above. 



Inhabits holes in salt-marshes, in the same manner with the preceding. It is found along 

 the shores of the Southern States and among the Antilles, but I am not aware of its having 

 been yet detected on the coast of this State. 



GENUS NAUTILOGRAPSUS. Milne-Edwards. 



The shield shortest in its transverse diameter, convex. Tarsi large and spinous. Third joint 

 of the external jaw-feet not crested. Front lamellar, advanced, not bent over, but simply 

 inclined downward : lateral edges of the shield thin. Legs short ; the four posterior pair 

 acute at their tips. 



Nautilograpsus minutus. 



Cancer minulus. LlN. Herbst, pi. 2, fij. 32. 



Grapsus minutus. Latreille, Hist. Nat. des Crust, et des Ins. Vol. 6, p. 68. 

 G. cinereus. Say, Jour. Acad. Nat. Sciences, Vol. 1, p. 99. 



Nautilograpsus minutus. Edwards, Hist. Nat. des Crust. Vol. 2, p. 90. 



Description. Body small, subquadrate, depressed ; the anterior angles acute, with a sinus 

 behind them on the edge. A small spine, more or less distinct, behind the external canthus. 



