INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 547 



Panopeus Herbstii Edwards, (p. 472.) 



Op. cit., vol. i, 403, 1834 ; Smith, Proceedings Boston Soc. Nat. Hist., vol. xii, p. 

 276, 1859. 



Long Island Sound to Brazil, but not couimon north of Xew Jersey. 

 It is readily distinguished from the following species, by the tubercle on 

 the subhepatic region, just below the first lobe of the antero-lateral 

 border of the carapax ; by the postorbital tooth being separated from the 

 second tooth of the antero-lateral margin by a rounded sinus j and by 

 the dactylus of the larger cheliped having a stout tooth near the base 

 within. 



Panopeus depressus Smith. Plate I, fig. 3. (p. 312.) 



Loc. cit., p. 283, 1859. 



From Cape Cod to Florida, and often carried with oysters much 

 farther north. It is, perhaps, native in Massachusetts Bay. 



Panopius Sayi Smith, (p. 312.) 



Loc. cit., p. 284, 1859. 



Associated with the last, and having the same range. It is easily dis- 

 tinguished from the last species by its narrower, more convex, and 

 swollen carapax, and by the more projecting and arcuate front. The 

 terminal segment of the abdomen of the male is also quite different in 

 the two species; in P. Sayi it is broader than the preceding segment, 

 about two-thirds as long as broad, the edges slightly concave, and the 

 tip abruptly triangular, while in P. depressus it is narrower than the 

 preceding segment, about three-fourths as long as broad, the edges con- 

 vex, and the tip broadly rounded. 



Panopeus Harrisii Stimpson. (p. 313.) 



Loc. cit., p. 55, 1859. Pilumnus Harrisii Gould, op. cit., p. 326, 1841. 



Massachusetts Bay to Florida. 

 Carcinus granulatus (Say, sp.) (p. 312.) 



Cancer granulatus Say, loc. cit., p. 61, 1817. Carcinus mcenas Gould, op. cit., p. 



321 ; DeKay, op. cit., p. 8, PL 5, figs. 5, 6. (?) Carcinus mcenas Leach, Edwards, 



&c. 



Cape Cod to Xew Jersey, and perhaps much farther south. Our 



species may, very likely, be the same as the Carcinus mamas of Europe, 



but its not extending north on our own coast throws some doubt upon 



this until there has been a careful comparison of specimens from the 



two sides of the Atlantic. 



Platyonichus ocellatus Latreille. Plate I, fig. 4. (pp. 338, 533.) 



Encyclopedie metliodiqne, tome xvi, p. 1.52 ; DeKay, op. cit., p. 9, PL 1, fig. 1, PL 

 5, fig. 7. Cancer ocellatus Herbst, Krabben und Krebse, Band iii, erstes Heft, 

 p. 61, PI. 49, fig. 4, 1799. Portunus jjictus Say, loc. cit., p. 62, PI. 4, fig. 4, 

 1817. 



Cape Cod to Florida. 



