266 S. J. /Smith — Tropical and Sub-tropical 



PachygrapSUS tranSVersUS Stimpson (continued). 



Kingsley, Proc. Boston Soc. Nat. Hist., xx, p. 158, 1879; Proc. Acad. Nat. Sci. 



Philadelphia, 1879, p. 400, 1880 (includes specimens from west coast Central 



America, but does not make P. socius a synonym). 

 Goniograpsus innotatus Dana, Proc. Acad. Nat. Sci. Philadelphia, 1851, p. 249 (3), 



1851 (South America); Crust. U. S. Expl. Exped., p. 345, pi, 21, fig. 9, 1852. 

 Lepiograpsus rugulosvs M.-Edwards, Ann. Sci. nat., Ill, xx, p. 172 (138), 1853 



(Brazil). 

 PachygrapSUS innotatus Stimpson, Proc. Acad. Nat. Sci. Philadelphia, 1858, p. 102 



(48), 1858 (Madeira). 

 Metex)ograp>sus mineatus Saussure, Crust. Mexique et Antilles (Mem. Soc. Phys. Hist. 



nat. Geneve, xiv), p. 28, pi. 2, fig. 17, 1858. 

 Metopograpsus duhius Saussure, ibid., p. 29, pi. 2, fig. 16, 1858. 

 PachygrapSUS intennedius Heller, Zool. Bot. Verein Verhaudl. Wien, xii, 1862, p. 



521 (Brazil); Reise der Novara, Crust., p. 44, 1865. 

 PachygrapSUS socius Stimpson, Ann. Lye. Nat. Hist. New York, x, p. 114, 1871 



(Cape St. Lucas, Panama, Peru). 

 Grapsus {Leptograpsus) rugulosiw von Martens, Archiv fiir Naturgesch., xxxviii, p. 



108, 1872. 

 Grapsus {Lep)tograpsv^) mineatus von Martens, ibid., p. 109, 1872. 

 PachygrapSUS rugulosus Smith, Trans. Conn. Acad., ii, p. 37, 1869 {= Leptograpsus 



rugulosus M.-Edwards). 

 Goniograpsus {Pachygrapsus) transversus Lockington, Proc. California Acad. Sci., 



1876, p. — (9), 1877 {r= Pachygrapsus transversus Smith). 



Four adult specimens of this species were taken alive from the 

 bottom of a whaler in Provincetown Harbor, September 3, 1879. As 

 far as I am aware, it has not before been recorded north of Florida 

 on our coast. I have also examined a large number of specimens 

 from the following iVtlantic Ocean localities: Bermudas (G, Brown 

 Goode, J. M. Jones); Key West (Dr. Harrison Allen); Aspinwall 

 (F. H. Bradley) ; Brazil (C. F. Hartt). From the Pacific coast I 

 have examined specimens from Gulf of Fonseca (J. A. McNiel) ; 

 Acajutla and Panama (F. H. Bradley) ; Paita, Peru (F. H. Bradley, 

 James Orton), 



I can find no characters whatever in Dana's figures or description 

 for distinguishing his imiotatus from Gibbes' transversus. Stimpson 

 says the transversus is " scarcely to be distinguished from P. innota- 

 tus, but the carapax is somewhat more convex." In all of the five 

 specimens which I have examined from Brazil, the carapax is slightly 

 less convex than in the majority of those from Florida and Bermuda, 

 but some of the specimens from these latter localities are as little 

 convex as, or even less convex than, the Brazilian specimens. All 

 the unfaded specimens which I have seen from the west coast of 



