r3 



ACADEMY OF SCIENCES. 9 



The branchial regious are much elevated in old specimens. 



I have preferred to employ Dana's name of Goniograpsus in preference to 

 Randall's PachygnipsiAs, as the generic characters given by the former author 

 are the more precise and definite. 



This species appears to be very near to the Goniopsis cnienkdus of De 

 Haan, but that species has the band, carpus, and dactylus small spinulous 

 above. 



No. 58. Magdalena Bay, in spirits. W. J. Fisher. 



19. I'achyijmpsHs {Goiograpsus) crassipes. Randall, Jour. Acad. Nat. Sci., 



Phil., VIII, 137; Stimpson, Crust. & Echi., P. S. N. A., 27. 

 No. 59. Several specimens, S. F. Bay. W. N. Lockingtou. 



20. Goniogrupms {Pachygrapsus) tramversus. Gibbes, Amer. Asso. Adv. 



Sci., 1850, p. 181; Stimpson, Ann. Lye. Nat. Hist., N. Y., vol. VII, 

 p. 64; S. I. Smith, Rep. Peabody Acad. Sci., 1869, p. 91. 

 The last named writer mentions specimens from Havana, the Gulf of Fou- 

 seca, and other points of the Pacific coast. 



1 have not seen either the species or a description of it, and therefore can- 

 not be certain that the species just described may not be identical with it; but 

 if so, the name transversus is very inapplicable. 



21. Glyptograpsits impressns. S. I. Smith, Trans. Conn. Acad., vol. II, p. 154. 

 Acajutla, west coast. Central America. 



32. Goniopsis cruentatus. De Haven; S. I. Smith, Rep. Peabody Acad. Sci., 

 1869, 91. 



23. Svsanna sulcata. S. I. Smith, Trans. Conn. Acad., loc. dt. p. 156. 

 Corinto, W. coast Nicaragua. 



24. Ses'irma occklentalis. S. I. Smith, lor,, cit. p 158 

 Acajutla, W. coast Central America. 



25. Sesarma angusta. S. I. Smith, loc. c'U. p. 159. 

 Pearl Islands, Baj' of Panama. 



26. Aratus Pisoni? M. Edwds, Ann. Sci. Nat. 3d ser., 1853, tome XX, p. 

 187. Hist. Nat. des Crust. II, p. 76, pi. 19, f. 45. 



"A specimen from Corinto, Nicaragua, appears to belong to this species, 

 but it has not been carefully compared with east coast specimens." S. I. 

 Smith, Rep. Peabody Acad. Sci., 1869, p. 92. 



GONOPLACID^. 



27. Prionoplux cUiatns. S. I. Smith. 

 Panama. 



