THE GRAPSOID CBABS OF AMEBICA. 377 



F*. Front narrower, less than one-third of fronto-orbital width. 

 G'. Oblique tuberculate ridt?e on inner surface of larger palm of 

 male terminating at carpal cavity. 

 n\ Eyebrow nearly vertical, scarcely visible in a dorsal view. 

 Space between carpal cavity and dactylus coarsely gran- 

 ulate pugnax, p. 395. 



H*. Eyebrow Inclined, visible in a dorsal view. Space between 

 carpal cavity and dactylus finely granulate. 



pugnax rapax, p. 397. 

 G*. Oblique tuberculate ridge not terminating at carpal cavity, but 

 continued upward with an angular turn. 

 H\ Side margins strongly convergent posteriorly. 



macrodactylus, p. 404. 



H'. Side margins moderately convergent. 



3\ Merus joints of legs not enlarged brevifrons, p. 393. 



J». Merus joints of legs enlarged galapagensis, p. 403. 



D*. No oblique tuberculate ridge on inner surface of palm, extending 



upward from lower margin pugilator, p. 400. 



C*. Anterior part of side margins straight, or nearly so. and continued 

 thence backward with an angular turn. 

 D\ An oblique tuberculate ridge on inner surface of palm extending 

 upward from lower margin. 



E\ Oblique ridge terminating at carpal cavity Uruguay ensis, p. 413. 



E*. Oblique ridge not terminating at carpal cavity but continued up- 

 ward with an angular turn. 

 F\ A spine or tooth on inner surface of carpus. Oblique ridge very 



prominent spinicarpa, p. 411. 



F*. No spine on inner surface of carpus. Oblique ridge moderately 

 prominent. 

 G\ Oblique ridge and proximal ridge at base of dactylus meeting 



above oerstedi, p. 414. 



G*. Oblique ridge and proximal ridge at base of dactylus not 

 meeting. 

 B.\ Upper surface of palm turned abruptly at right angles with 

 outer surface and forming a flat or concave surface. 



color adensis, p. 410. 

 H'. Upper surface of palm rounding gradually into outer surface. 

 J\ Upper margin of palm with a carina. 



K\ Proximal ridge at base of dactylus almost at right angles 



to lower margin crenulata, p. 409. 



K\ Proximal ridge at base of dactylus very oblique to lower 



margin spcciosa, p. 408. 



J-. Upper margin of palm without carina hclleri. p. 415. 



D'. No oblique tuberculate ridge on inner surface of palm extending up- 

 ward from lower margin panamensis, p. 412. 



B*. Carapace very convex, semicylindrical. 



C*. An oblique tuberculate ridge on inner surface of palm extending upward 

 from lower margin. 

 D\ Third to sixth abdominal segments in male more or less fused. 

 E\ Carapace little narrowed behind. 



F*. An oblique stridulating ridge near proximal lower corner of inner 

 surface of large palm of male. Upper margin of orbit little 

 oblique muaica, p. 417. 



