56 SMITHSONIAN misce;lIvAne;ous coi^lections 



lated; fing-ers black, much gaping, within dentate with very small 

 distant teeth. Ambulatory feet as in the preceding varieties. Di- 

 mensions : Length, 0.45 ; breadth, 0.73 inch. 

 Found at Hongkong. 



Var. i, GRANULOSUS 

 Plate VI, Fig. 3 



No supplementary tooth. Carapax broad as in the preceding 

 variety, but with triangular^ non-acuminate antero-lateral teeth. 

 Transverse line connecting lateral teeth, distinct. Transverse edges 

 of areolets conspicuously granulated. A granulated ridge, inter- 

 rupted at the middle, just above and parallel with the posterior 

 margin. Front narrow, strongly protruding. Hands somewhat 

 grooved above ; with the outer surface covered with large granules ; 

 fingers black, somewhat gaping, with large teeth. Ambulatory feet 

 granulous above ; penult and antepenult joints broadly grooved 

 above as if eroded ; dactyli granulose and hairy. Dimensions : 

 Length, 0.525 ; breadth, 0.79 inch. 



Found at Hongkong. 



74. The variety called Xantho distingucndus ^ by De Haan differs 

 from var. granulosus only in its narrower form, less protruded front, 

 and more granulous meros joint of the feet. 



In all the varieties the black color of the thumb is extended upon 

 the hand, and circumscribed by a waved line having an inward and 

 downward direction. 



Chlorodius Horidaniis Gibbes, is by some authors considered a 

 variety of C- exaratus. But a constant distinctive character may be 

 found in the thickening or downward protrusion of the median lobes 

 of the front, which is seen in all examples of the American species. 



Chlorodius exaratus inhabits stony ocean shores, at or above low- 

 water mark. 



75. CHLORODIUS GRACILIS ' Dana 



Chlorodius gracilis Dana, U. S. Exploring Expedition, Crust., i, 210, pi. 

 XI, fig. 13. 



Carapax smooth, areolets not prominent and often indistinct ; sur- 

 face minutely granulose toward the antero-lateral margins. Antero- 

 lateral teeth five in number including: the ang^le of the orbit ; thev 



^ Lcptodius distinguendus (de Haan). 

 'Leptodius gracilis Dana. 



