Smith.] 282 [February 3, 



not gaping and wanting the basal teeth. Fingers brown, lighter at 

 the tips, and the dactyli lighter than the other fingers. 



Length of carapax in the male, 8.4 millim. ; breadth, 11.5 millim. ; 

 ratio, 1:1.37. 



Panama ; F. H. Bradley. 



Panopeus politus, sp. nov. 



Carapax entirely naked above, broad, moderately convex in two 

 directions, slightly granulous and uneven on the front and antero- 

 lateral border, smooth on the median region and posteriorly; regions 

 slightly, but distinctly marked. Front strongly deflexed, the edge 

 somewhat beveled from above, four-lobed, the median lobes being 

 very broad, prominent, and separated by a sharp notch, the lateral 

 lobes projecting as small teeth. First lobe of the anterolateral 

 margin broad, and its edge slightly concave ; remaining lobes trun- 

 cate and separated by three slight notches, from which slight grooves 

 extend back upon the carapax, that from the second notch being most 

 distinct, and forming the posterior limit of the hepatic region. Inner 

 angle of the inferior margin of the orbit forming a prominent tooth, 

 the outer part of the margin projecting very little. All the sub- 

 orbital and sub-hepatic regions distinctly granulous; the tubercle on 

 the sub-hepatic region being much depressed, forming a slight granu- 

 lous prominence. 



Chelipeds with the carpi and hands smooth and evenly rounded 

 above ; hands a little unequal, fingers rather stout, irregularly toothed 

 within, and with a prominent tooth at the base of the dactylus in the 

 larger hand. Ambulatory feet nearly naked, except the dactyli, 

 which are covered with a close pubescence. 



Color of alcoholic specimen light brown above, tinged with bluish 

 purple on the anterior part of the carapax and the upper side of the 

 chelipeds; fingers black, lighter at the tips, the color not spreading 

 upon the palm. 



Length of carapax in a female, 13.8 millim. ; breadth, 21.4 millim. ; 

 ratio, 1: 1.55. 



Abrolhos Reefs, Brazil ; Prof. C. F. Hartt. 



This species is allied to P. transversus Stimpson (Annals Lye. Nat. 

 Hist. N. Y., Vol. VII, p. 210, 1860), from the west coast of Central 

 America, but is easily distinguished from it by the more deeply 

 areolated and uneven carapax, the more produced front, the concave 

 instead of convex post-orbital lobe, and by the more deeply notched 

 and uneven antero-lateral margin. The color also is very different. 



