^°l89i!''] PROCEEDINGS OF THE NATIONAL MUSEUM. 361 



The marginal depression on the carpus near the articulation with the 

 hand is wide and deep. In some specimens the carpus is finely granu- 

 late ; in others the granules are thrown up in slight rugne. The hand 

 varies in much the same way: in some specimens finely granulate; in 

 others, thrown up in rugiie as in the carpus. In the latter case the 

 hand is always much smoother than the carpus in the same specimen. 

 Fingers brown or liorn color, shading to clear white at the tips. There 

 is a large tooth at the base of the dactyl of the large hand. There is 

 also a more or less prominent tooth on the large hand at the base of 

 the dactyl. The color on the immovable finger does not extend beyond 

 the line of color on the movable finger; while in herbstii it usually 

 extends considerably beyond. Meros of ambulatory feet more slender 

 and a little longer than in specimens of herhstii of the same size. Am- 

 bulatory feet slightly hairy. 



The most of our specimens are readily separated from herhfttii by the 

 color, which, in alcohol, is very much lighter, with a pinkish tinge on 

 the chelipeds. This separation is confirmed by the prominent depres- 

 sion on the carpus near the articulation with the hand, of which there 

 exists scarcely a trace in herbstii. 



Length of carapace in large specimen, 20 millimetres; width, 27.5 mil- 

 limetres. 



RECORD OF SPECIMENS EXAMINED. 



South Carolina; U. S. Fish Commission, 1891: Calibogue Sound (15713, 15716). 



Florida: Carysfort Reef (9297); Indian Key (15418V, No Name Key (15015); Key 

 West (14445, 15424); South Florida (3464); Marco (15427); Goodland Point (15426); 

 Boca Ceiga Bay, inner shore of Pine Key (15425). 



Caribbean Sea; U. S. Fish Commission, 18rf4: Jamaica (7678); Old Providence 

 (9135) ; Sabanilla, U. S. C. (15656) ; Curagao (7588) ; Trinidad (15657). 



3. Panopeus areolatus, sp. nov. 

 (Plate XXI, fig. 3.) 



This species in its shape and proportion is most nearly related to 

 herbstii, in its antero-lateral teeth to angustifrons and bermudensis. 

 Carapace more flattened than in herbstii, antero-lateral teeth slightly 

 upturned, the posterior three much more triangular than in herbstii. 

 Areolations of the carapace very distinct in the young as well as the 

 adult. In the younger forms the granules of the anterior portion are 

 arranged in more marked lines than in the older. 



Front narrower and slightly more produced in the middle than in 

 herbstii. External lobes well marked and slightly produced ; front thick- 

 ened, readily distinguishing this species from herbstii; upper and lower 

 edges granulate ; the intermediate space is occupied by large granules 

 and by some irregular spaces without granules. 



Coalesced tooth unevenly divided into two parts by a sulcus which 

 cuts it about one-third the way to the base. Posterior portion larger 

 and rounded, anterior pointed. Anterior margin of second tooth trun- 



