CRUSTACEA. 3 



THORACOSTKACA. DECAPODA. 



OCYPODIDAE. 



5. Geryon quixquedexs Smith. 



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

 vol. 5, p. 35, pi. 9, figs. 1-1 b, 2. "off Casco Bay aistd ix tue 

 Gulf of Maine, off Massachusetts Bay." 



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. 



Cancer grapsus Linne, Syst. nat., ed. 10, 1758, vol. 1, p. 630, 

 "in America, Insula Adscensionis." 



Grajysus 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 transversus (Gibbes). 



Grajysus transversus Gibbes, Proc, Amer. assoc. adv. sci., 

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



Gomograjysus 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 l)Ottora of whaler ; 4 

 specimens. 



