THE CRUSTACEA OF NEW JERSEY. 361 



Gebia Leach, Trans. Linn. Soc. London, XL 1815, PP- 335, 342. Type Cancer 

 (Astacus) stellatus Montagu, virtually, as this name give to replace 

 Eupogebia. 



Gebios Risso, Hist. Nat. Eur. Mer., Crust., V, 1826, p. 51. Type Gebios 

 littoralis Risso, first species. 



Gebius, auct. 



Carapace narrowed anteriorly, ends in short triangular ros- 

 trum. Abdomen narrowed at each end, somewhat depressed. 

 Antennse of both pairs placed nearly on same level. Antennules 

 v^ery short, double flagella rather longer than peduncle, which 

 latter dilated on outer side at base. Antennae very slender, with- 

 out vestige of movable scale at base, flagella very long and joints 

 subelongate. External foot-jaws pediform, slender. First pair 

 of feet somewhat robust, nearly ecjual, straight, arm becoming 

 trig-onus forward. Carpus short, rounded, elongate hand imper- 

 fectly cheliform, and large movable finger turns down to im- 

 movable one, which not half its length. Perseopods slig-htly com- 

 pressed, with single dactyls. 



Species rather few, and but one along our shores. 



Upogebia affinis (Say). 



Plate 108. 



Mud Lobster. 



Gebia afUnis Say, Journ. Acad. Nat. Sci. Phila., L 1818, p. 241. Georgia. 



— De Kay, N. Y. Fauna, Crust., VL 1844, p. 22 (on Say). 



• — White, Cat. Crust. Brit. Mus., XXV, 1847, p. 71. Georgia (tail and 



part of abdomen of Say's material). 



• Leidy, Journ. Acad. Nat. Sci. Phila., (2) III, 1855, p. 150. Great 



Egg Harbor, New Jersey. 



" Verrill. Rep. U. S. F. Com,., L 1871-72 (1873), p. 368, PI. 2, fig. 7. 



Great Egg Harbor, New Jersey, near Beesley's Point, New Haven, 

 Wood's Holl etc.; p. 519 (in Paraliclithys dcntatus) ; p. 520 (in LopJwp- 

 setta mactilata, this and preceding at Great Egg Harbor) ; p. 530 

 (young). 



S. L Smith, Rep. U. S. F. Com., L 1871-72 (1873), p. 549. Long 



Island Sound to South Carolina. 



Kingsley, Proc. Acad. Nat. Sci. Phila., 1878, p. ^27. Long Island 



Sound tO' Florida. 



— Leidy, Proc. Acad. Nat. Sci. Phila., 1888, p. Zii- Beach Haven, New 



Jersey. 



