30 THE BRACHYURA. ' 



lines fringed anteriorly by hairs lying flat on the carapace, and averaging 

 half the width of the space between ridges. Lateral borders parallel and 

 entire. 



Front a little over half width of carapace, steeply inclined, its free edge 

 slightly sinuous and as a whole convex. Middle pair of suprafrontal lobes 

 very prominent and elongate, separated from each other and from the 

 lateral lobes by broad, deep, hairy furrows. 



Chelipeds of <? unequal, much stouter than legs, li x as long as carapace, 

 and roughened by striae fringed with hair, those on the arm smooth, those 

 on the wrist granulated, short and curved ; those on the outer face of the 

 palm coarsely granulate and longitudinal, except near the top, where they 

 are broken into short lines or tubercles. Inner border of ischium and merus 

 denticulate; inner tooth of wrist stout, sharp-pointed. Fingers narrowly 

 gaping, each with a tooth on the basal half much larger than the other teeth ; 

 that on the dactylus is proximal to that on the pollex. 



Legs smoothly striated, the striae fringed ; those on the merus joints 

 transverse, those on the carpal and propodal joints longitudinal. Last three 

 joints bristly and sparsely long-hairy. Merus with a subterminal spine on 

 the anterior margin, and 3 or 4 spines at the distal end of the posterior 

 margin. Second leg longest, twice as long as carapace. 



Dimensions: — $ , length 18 mm., width 19.5 mm. 



Type locality : — Fakarava Id., Paumotus ; outer reef; Oct. 12, 1899; 1<? 

 (Cat. No. 32,844, U. S. N. M.). 



This species is near P. plicatus (Milne Edwards), 1 but is distinguished at 

 once by its parallel sides, coarse striation, and great hairiness. 



PachygrapsUS minutUS A. Milne Edwards. 

 Pachygrapsus minutus Rathbun, Bull. U. S. Fish Comm. for 1903 (1906) part 3, 840. 

 Ponape, Caroline Ids.; reef; Feb. 11, 12, 1900; 6 <?, 1 ?. 



Pachygrapsus longipes Rathbun. 



Pachygrapsus longipes Rathbun, Bull. U. S. Fish Comm. for 1903 (190C) part 3, 840, 

 pi. 8, fig. 7. 



Fakarava Id., Paumotus; outer reef; Oct. 12, 1899 ; 1 ? 

 Kusaie, Caroline Ids.; reef; Feb. 8, 1900 ; 3 $ 1 9 . 

 Ponane Caroline Ids.; reef; Feb. 11, 12, 1900; 2 9 



1 Hist. Nat. Crust, 1837, 2, 89. 



