224 



BULLETIN 97, UNITED STATES NATIONAL MUSEUM. 



Chelipecis small, 4 or 5 small tubercles on carpus, a linear row of 

 three or four on upper border of palm; fingers strongly dentate. 



Second pair of ambulatory legs missing; merus of first and third 

 pairs slender, c^'lindrical, spinulous on the anterior portion. 



Measurements. — Immature female, greatest length of carapace 6, 

 width of same mm. 



Material examined. — Off coast of Brazil, north of Bahia ; lat. 11° 

 49' S.; long. 37° 10' W.; 15 fathoms; January 18, 1872; station 225, 

 U.S.C.S. Str. Ilassler; 1 immature female, holotype (GoOG, M. C. Z.). 



Fio. 134. — CvMoroLtA AccTirnoxs, female noLOTTPE, after a. Milne Edwauds 

 AMI ItocvrKu. o, Right fuo.vtal uoudek, X 15 (ehoe hetweex median teetu 



AMI OIMIIT imOKEX) ; b, ItlCIIT OUTEIt OUBITAL ANGLE AND ADJOINING TOOTH US' 

 INFKA-OltlMTAL BOUDEIt, X 15 ; C, MEDIAN PART OF FUONTAL HOUDEIt, X 20 ; d, 

 LEFT I'TEKYCOSTOMIAN LOliE AND CONTICUODS AXTEXNAL PEUUNCLE, VEXTBAL 



VIEW, X 15 ; e, right eve, from above, X 15. 



Family GRAPSIDAE Dana. 



Grapsoldiais JIilne Edwards, ITist. Nat. Crust., vol. 2, 1S37, p. 08. 

 Grapmlac Dana, Ainer. Journ. Sci., ser. 2, vol. 12, 1S.j1, p. 2S7 ; U. S. Expl. 



Expod., vol. 13, Crust., pt. 1, 1S.j2, p. 329.— Alcock, Journ. Asiat. Soc. 



Bonsai, vol. CO, 1000, pp. 283, 288, and 205, and synonymy. 



The palp of the external maxilUpeds articulates either at the 

 antero-external angle or at the middle of the anterior border of the 

 merus; exognath either very slender or very broad. Interantennular 

 Beptum very broad; the division of the orbit into two fossae is ac- 

 cented. 



Front of great breadth. Carapace usually quadrilateral, with the 

 lateral borders either straight or slightly arched, and the orbits at or 

 very near the antero-lateral angles. Buccal cavern square; there is 

 generally a gap, often large and rhomboidal, between the external 

 maxillipcds. Male openings sternal. 



Littoral, among rocks; pelagic, in drift weed and timber; inhabit- 

 ing estuaries and marshes, or rivers, rarely on land. 



