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EUPAGURUS CALIFORNIENSIS. 



55 



In the unique tjpe specimen of C tamicri the abdomen is not quite sym- 

 metrical, but this may be an individual peculiarity resulting from the shape of 

 the cavity in the stone which formed its abode. 



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CALCINUS Dana. 



rroc. Acad. Nat. Sci. Pliila., V. 2(j8, 1851, 



Calcinus obscurus Sumps. 



Ann. L^c. Nat. Hist. N. Y„ VII. 83, 1859. 



Two specimens; collected at Panama. The larger specimen is in the 

 shell of Ner'da scabricoda. 



EUPAGURUS Bkaj^dt (restr.). 



Middendorir 's Sibirischc Rcise, Bd. II., Tk 1, p. 105, 1851. Restricted by Stimpson, Proc. Acad. 



Nat. Sci. riiila. X. 23G, 1858. 



Eupagurus californiensis Benedict. 



riate XL, Fig. 2-P. 



Proc U. S. Nat. Mus,, XV. 21, 1892. 



This species belongs to the E, tenuhnamis gronp (subgenus Elassockinis 

 Benedict*), which includes smooth species with broadly oval right hand, 

 very small loft hand, and ophthalmic scales usually long, pointed, and con- 

 cave above. The species belonging to this group in many ways approach 

 the f-enus P^lopagurus A. M. Edw. et Bouv.,t but the right hand is not trans- 

 formed into the highly specialized operculum of Pglopagiirus^ and there are 

 no paired sexual appendages on the abdomen in cither sex. 



Description of a male. — Body and appendages, in general, smooth and free 

 from hairs. Carapace shorter than the abdomen ; anterior section longer 

 than the posterior, indurated, smooth, polished, naked, convex from side to 

 side lon-^^-er than wide; gastric region bounded on each side by a conspicuous 

 lon^n'tudinal furrow; median projection of the front short and acute, pro- 

 duced beyond the lateral projections, which are angular but not acute ; a stiff 

 hair sprin^-s from each side of the base of the median projection of the front. 

 Eye-stalks rather long, curved slightly outward, somewhat enlarged at the 

 distal end, and furnished with a few small tufts of hair arranged in a longitu- 



* Proc. U. S. Nat. Mus. XV. 1, 1892. f Mem. Mus. Comp. Zool., Vol XIV,, No, 3, p. 74, 1893. 







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