THE GRAPSOID CRABS OF AMERICA. 



407 



Front narrower than usual in this group, less than one-fifth width 

 of carapace, its sides longer than the slightly convex lower margin. 

 Orbital margin moderately oblique and sinuous. 



Hems of large cheliped of male crossed with short granulate rugae; 

 carpus scabrous. Upper part of outer surface of hand coarsely granu- 

 late or tubercu- 

 late, very finely 

 granulate below, 

 as on the fingers 

 also. Fingers 

 twice as long as 

 palm, narrowly 

 gnping; prehen- 

 sile edges with 

 one or more 

 larger tubercles; 

 one of these is al 

 the basal fourth 

 of the dactylus. 

 Inner face of 

 palm with a sin- 

 gle row of tu- 

 bercles on the 

 oblique ridge, 

 which turns at a 



right angle at the middle, after which it is continued but a short 

 distance. Surface between ridges smooth. 



Aierus of ambulatory legs much dilated. 



Measurements. Aiale (22192), length of carapace 17.2, width of 

 same 27.5 mm. 



Range. Jamaica and Porto Rico to Brazil. 



Material examined. 



Jamaica; Alar. 1-11, 1884; Albatross; 1 male (22321). 



Rio Bayamon, above Palo Seco, Porto Rico; Jan. 16, 1899; Fish 

 Haick; 2 males, 1 female (24541). 



Fajardo, Porto Rico; Feb. 17, 1899; Fish Hawk; I male, 1 female 

 (24542). 



Victoria, Brazil; Thayer Exped.; 2 females (22193); 5 males, 19 

 females (Al.C.Z.). 



Natal, Rio Grande do Norte, Brazil; June 29, 1899; Branner- 

 Agassiz Exped.; 1 male (25G99). 



Cabedello, Rio Parahyba do Norte, Brazil ; June 20, 1899; Branner- 

 Agassiz Exped.; 7 males, 1 female (types) (23753). 



Rio Parahyba do Norte, Brazil; Thayer Exped.; 1 male (22192), 

 4 males, 1 female (Al.C.Z.). 



Fl0 ' 1C9< UCA THAYEni ' MALE (23753), NATURAL HUE. a, DOB- 

 SAL VIEW ; 1), INNElt SUHFACE Or LAUUEU CHELA. 



