CRUSTACEA. 3 



THOEACOSTRACA. DECAPODA. 



OCYPODIDAE. 



5. Geryox quin'quedens Smith. 



Geryon quinquedens Smith, Trans. Conn, acad, sci., 1879, 

 vol. 5, p. 35, pi. 9, figs. 1-lb, 2, "off Casco Bay and ix the' 

 Gulf of Mai^^e, off Massachusetts Bat." 



Me. — Off Casco Bay, deep water from stomachs of fishes. 

 Off Georges Bank, 105 fms. 



Mass.— Off Cape Ann, 98 to 160 fms. ; off Mass. Bay, 117 to 

 142 fms.; off Cape Cod, 94 to 118 fms. 

 R. I.— Off Block Island, 322 to 452 fms. 



GRAPSIDAE. 



6. Grapsus grapsus (Linne). 



Rock crab. 



Ca7icer grcq^sus Linne, Syst. nat., ed. 10, 1758, vol. 1, p. 630, 

 "in America, Insula Adscensionis." 



Grapsus maculatus Milne Edwards, Ann. sci. nat., 1853 (3), 

 vol. 20, p. 167 [133], pi. 6. 



A tropical species. 



Mass. — Provincetown Harbor, from bottom of whaler just 

 returned from a voyage ; one specimen. 



7. Pachygrapsus trans versus (Gibbes). 



Graj^sus transversus Gibbes, Proc, Amer. assoc. adv. sci., 

 1850, vol. 3, p. 181 [17]. "Key West." 



Goniograpsus innotatus Dana, Crust. U. S. Expl, Exped., 

 1852, pt. 1, p. 345 ; atlas, 1855, pi. 21, fig. 9. 



A tropical species. 



Mass. — Provincetown Harbor, from bottom of whaler; 4 

 specimens. 



