HERMIT ('/,'. I BS—BEXEDTCT. 



455 



I 



icaii I'onn the granules iiuike a .sharp and rather thin odj^e. The worn 

 condition of the European specimens may aceount foi- a part of this 

 diii'erenee. The eyestalks in the American form are rehxtivel}^ laro-er, 

 as shown in tig. 1. The measurements of acadianun were made 

 from specimens averaging- larger than those with which they are com- 

 pared. Much of the utility of the study of geographical distribution 



Pagurtts acadiantjs. 



of a genus must be lost if forms closely relatea are groupea unaer one 

 specific name. The name hernhardiis as readily designates our species 

 from its associates, ^?/56.s<?ew»s, hroyeri^ etc., as will acadianus, but the 

 latter name will much better emphasize the difference separating it 

 from the European species or from the more closely related North 

 Pacific form. 



RECORD OF SPECIMENS EXAMINED. 



From the Grand Bank of Newfoundland to the mouth of Chesapeake Bay, 7 to 

 I'tio fathoms, U. S. Fish Commission. 



