CRUSTACEA NORTH PACIFIC EXPLORING EXPEDITION 55 



Var. e, TYPICUS 



A variety which may be considered typical, agreeing perfectly 

 with Milne Edwards's original description, and showing in a mod- 

 erate degree nearly all the characters which are excessively de- 

 veloped in other varieties. It differs from the var. latifrons in its 

 narrower front and somewhat gaping pincers. 



Found at Ousima, and at other islands in the Chinese and Japanese 

 seas- 



Var. f, ACUTIDENS 



Plate VI, Fig. 7 



Supplementary tooth waiting. Carapax less broad than in ordi- 

 nary varieties. Areolets sharply prominent. Antero-lateral teeth 

 strongly projecting and acuminate (i. e., with concave sides), the 

 anterior ones sharper than usual. Front narrow, not much pro- 

 truded, deeply sinuous, almost quadridentate. Chelopoda stout, 

 rugulose; fingers black, somewhat gaping, not strongly toothed 

 within. Ambulatory feet as in var. pictus, but more hairy- Dimen- 

 sions : Length, 0.532; breadth, 0.8 inch. 



Found at Loo Choo. 



Var. g, CUPULIFER 

 Pl.\te VI, Fig. 8 



Carapax as in var. acutidcns except that the edges of the areolets 

 are more granulous, and the antero-lateral teeth are more prominent. 

 Chelopoda as in var. rugosns: fingers somewhat gaping, their tips 

 well excavated, forming large deep spoon-shaped cavities or cups. 

 Dimensions : Length, 0.45 ; breadth, 0.66 inch. 



Found at the Ronin Islands. 



Var. /;, LATUS 



Pl.ate VI, Fig. 9 



Carapax very broad. Antero-lateral teeth strongly prominent, 

 acuminate, their edges with large granules appearing as if denticu- 

 lated. Surface smooth posteriorly. Areolets not prominent ; their 

 surfaces minutely granulose and sHghtly hairy. The transverse 

 raised line connecting the lateral teeth is distinct, and strongly 

 granulose at the point where it bifurcates to form the supplementary 

 tooth. Front narrow, strongly sinuous, or quadridentate ; somewhat 

 protruded. Chelopoda transversely rugulose, and minutely granu- 



