A. B. Verrill — Decapod Crustacea of Bermuda. 357 



segment much narrower, showing the sternal plates. Coxae of fifth 

 pair of feet not in contact with anchylosed segment. 



Carpi, chelipeds, and bases of the dactyls finely granulate; carpal 

 depression well defined along the margin, and extending around to 

 the tooth on the inner angle. Large cheliped very deep and rather 

 thick ; fingers light brown ; in some specimens white. Ambulatory 

 feet slender; dactyls very slender and hairy. (Bened. and Rathbun, 

 abridged.) 



The larger specimens and many of the smaller ones have the areo- 

 lations of the carapace veiy conspicuous, and the transverse ridges 

 are high and sharply cut or nearly perpendicular on the anterior side, 

 with the crest granulated ; but in some specimens the ridges are 

 obtuse with the front side sloping. The dorsal side of the carpus of 

 the chelse, especially of the smaller one, is grooved and roughened 

 and often bears two or three rounded tubercles. The dactylus is 

 strangely grooved above, or slightly bicarinate. 



Measurements of Bermuda specimens. 



Variety sculptus, nov. Plate xvi, figure 3. 



The strongly sculptured specimens differ so much in appearance 

 from the smoother ones that they might easil^^ be mistaken for a 

 distinct species, especially as they usually have also stronger mar- 

 ginal teeth, and the carpi of the chelipeds are rougher with about 

 three small rounded tubercles, which are lacking in the smoother 

 form. 



The coalesced post-orbital tooth is often distinctly divided into 

 two subeqiial denticles by a rounded notch ; in others the notch is 

 very shallow, while in some it is lacking so that the whole forms a 

 rounded or subtruncate lobe. I have, however, found these extreme 

 variations on the opposite sides of a single individual. 



This little species is very common at Bermuda, under stones at 

 low-tide and in shallow water dredgings. It is often associated Avith 

 the young of Leptodius floridanus, of the same sizes, which it 

 often closelv resembles, in form, in the areolations, and in the mar- 



