CRUSTACKA NORTH PACll-IC E-XPLORIXG EXPJ^DITIOX I27 



T\pical examples of the species were taken abundantly on the 

 •shores of the Straits of Sang-ar by Messrs. Brooks and Kern, and 

 by the officers of the '"Hancock." 



211. HETEROGRAPSUS NUDUS ' (Dana) Stimpson 



Psciidogral>siis niidus Dana, U. S. Expl. Exped., Crust., i, 335, pi. xx, 

 fig. 7. Stimpson, Pacific Coast X. A., Crust., p. 29. 



Heterograpsus mannoratus Milne Edwards, Mel. Carcin., p. 159. 



Heterograpsus mid us Stimpson, Proc. Acad. Nat. Sci. Phila., x, p. 104 

 [50], 1858. 



Found about the entrance of San Francisco Fay, among rocks and 

 stones, not far below hi£>h-water mark. 



Genus PSEUDOGR.\PSUS ^Flne Edwards 



212. PSEUDOGRAPSUS ALBUS Stimpson 



Pseiidograpsus albits Stimpson, Proc. Acad. Nat. Sci. Phila., x, p. 104 

 [50], 1858. 



Small ; carapax much flattened, smooth and glossy ; proportion of 

 length to breadth, i : 1.14. Epigastric lobules distinct. Posterior 

 cardiac region defined. Front broad, depressed, nearly horizontal. 

 Frontal margin thickened, straight or slightly convex, sufficiently 

 projecting. Antero-lateral margin with two slight emarginations 

 behind the angle of the orbit, indicating three minute teeth. Exter- 

 nal maxillipeds witji the external angle of the meros- joint dilated 

 and rounded. Chelipeds short, smooth, and glossy ; inner angle of 

 carpus prominent, acute ; hand smooth on both sides, palm much 

 shorter than the carpus ; a tuft of short hair on the outside between 

 the bases of the fingers. Ambulatory feet flattened, smooth, with 

 neither granules nor spines on any part; penult and terminal joints 

 somewhat hairy below ; dactyli tapering, sulcated. Abdomen of the 

 male rather narrow, tapering; penult joint subpentagonal, terminal 

 joint oblong. 



Color white, with a few scattered grayish dots and punctse. Dimen- 

 sions of a male : Length of carapax, 0.27 ; breadth, 0.282 inch. 



Found under stones above low- water mark, on gravel, in a small 

 liarbor on the southern side of Kikaisima. 



^ HcinigrapsHS nitdiis (Dana) 



