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. /, 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. riigosns; fingers somew'hat gaping, their tips 



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



. Dimensions : Length, 0.45 ; breadth, 0.66 inch. 



Found at the Rrinin Islands. 



Var. h, LATUS 

 Plate VI, Fig. 9 



Carapax very broafl. .Vntero-lateral teeth strongly prominent. 

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

 lated. Surface smooth posteriori}-. Areolets not prominent ; their 

 surfaces minutely granulosa and slightly 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 trinsvcrsely rugulose, and minutely graiui- 



