54 SMITHSONIAN MISCELLANEOUS COLLECTIONS 



Var. b, RUGOSUS 

 Plate VI, Fig. 4 

 With the characters of the preceding, except that the areolets of 

 the carapax, and also the antero-lateral teeth, are much more sharply 

 prominent and rugose. The reticulating rug^e of the chelopoda are 

 granulose, and there is a small tuft of setse in each of the cup-shaped 

 depressions at the tips of the fingers. This is the largest variety we 

 have met with. 



Found at the Ronin Islands. 



Var. c, PICTUS 

 Plate VI, Fig. 6 



Supplementary tooth wanting- Surface of carapax smooth pos- 

 teriorly ; areolets but little prominent except toward the antero- 

 lateral margin. Antero-lateral teeth broad, triangular, not much 

 projecting. Front somewhat broader than in var. saiigiiiiiciis and 

 protruding a little beyond the orbits. Chelopoda short, rugulose, 

 rugse minutely granulated. Pincers rather short, black, well toothed 

 and contiguous within. Ambulatory feet as in var. sanguineus, ex- 

 cept that the dactyli are less granulose. Color yellowish, symmetric- 

 ally clouded above with olivaceous, inclining to brown on the cara- 

 pax and to red on the feet. Dimensions: Length of carapax, 0.53; 

 breadth, 0.81 inch. 



Found at Simoda, Japan. 



The variety called Xaiitho afHiiis by De Haan differs from the 

 picfus in its smoother hand and gaping fingers. 



Var. d, LATIFRONS 



Supplementary tooth wanting. Carapax less broad than in other 

 varieties, rather convex, smooth posteriorly ; areolets not strongly 

 prominent, but with deep transverse sulci ; surface conspicuously 

 rugose and granulated. Antero-lateral teeth angular but not much 

 projecting- Front not protruding, and very broad, equaling in ex- 

 tent the antero-lateral margin excluding the lateral tooth. Chelopoda 

 rvtgulose ; outer surface of hand maculate with small circular red 

 spots. Pincers black, contiguous, toothed. Ambulatory feet as in 

 var. pictus. Dimensions : Length of carapax, 0.45 ; breadth, 0.70 

 inch. 



Found at Loo Choo. 



The variety called X. Ik'idus by De Haan dift'ers from the latifrous 

 only in having white fingers. 



