THE GBAPSOID CRABS OF AMERICA. Ill 



PAKAPINNIXA AFFINIS Holmes. 



Parapinnixa afflnis HOLMES, Occas. Papers California Acad. Sci., vol. 7, 

 1900, p. 95 (type-locality, Dead Mans Island, San Pedro, California; 

 type in Mus. Univ. California). 



Diagnosis. Carapace less than twice as wide as long. Movable 

 finger with tooth near middle, immovable finger with two teeth near 

 tip. Dactyls of first and fourth legs short and stout, of second and 

 third legs longer and slenderer. 



Description of female (after Holmes). Near P. nitida, but cara- 

 pace less than twice as wide as long; front triangular, with a short, 

 median groove. Antennules oblique. Maxillipeds with perhaps a 

 two-jointed palp, but this is uncertain. 



Chelipeds stout, smooth; hand thickened, smooth, rounded above 

 and below; dactyl hooked at tip, armed with a small tooth near 

 middle of inner margin, pollex with two teeth at tip. First leg 

 larger than others, dactyl short and stout; next two legs compara- 

 tively slender, dactyls longer; last leg small, reaching about to tip 

 of merus of preceding leg, dactyl short and stout. Abdomen widest 

 at third segment, behind which it is triangular, tip broadly rounded. 



Size. Not given. 



Locality. Dead Mans Island, San Pedro, California. Known 

 only from type female. 



PARAPINNIXA BOUVIERI, 1 new species. 



Plate 25, figs. 4-10. 



Type-locality. Off Cape Catoche, Yucatan; 25 fathoms; statioE 

 2362, Albatross; holotype female, Cat. No. 23441, U.S.N.M. 



Diagnosis. Carapace less than twice or barely twice as wide as 

 long. Movable finger with tooth near tip. Dactyls of first and 

 fourth legs short and stout, of second and third legs longer and 

 slenderer. 



Description. Minute. Carapace not more than twice as wide as 

 long, otherwise much as in hendersoni. 



The outer maxilliped when folded in place is triangular with the 

 two free corners rounded and the longitudinal side about two-thirds 

 its long as the posterior side, which is at right angles to it. The 

 merus-ischium is obliquely truncate at the distal end, leaving the first 

 joint of the palpus exposed; propodus elongate, distally tapering, 

 dactylus very small, suboval; both these joints fold under the merus. 



Chelae a little higher than in hendersoni, the propodus with con- 

 vex, not sinuous, lower margin; immovable finger subtriangular, 

 broad at base, a small tooth on prehensile edge near tip: dactyl with 



1 Named for Prof. E. L. Bonvier, Museum of Natural History, Paris, France. 



