ISOPOD CRUSTACEANS OF THE 

 NORTHWEST COAST OF NORTH AMERICA 



BY HARRIET RICHARDSON 



CONTENTS. 



Systematic discussion of species 213 



Bibliography 228 



The present paper contains a list of the Isopods collected by 

 the Harriman Alaska Expedition, and in addition a number of 

 species from California received from Dr. William E. Ritter, head 

 of the Zoological Department of the University of California.^ 

 Five species are described as new. A little-known species, 

 Idotea gracillima (Dana) is figured for the first time and de- 

 scribed more fully than heretofore ; and Asellus tomalcnsis Har- 

 ford also is redescribed and figured. 



FLABELLIFERA or CYMOTHOIDEA. 



Family CIROLANID^, 



CIROLANA HARFORDI (Lockington). 



^ga ^affordiLoCKl'^GrON, Proc. Calif. Acad. Sci., vil, Pt. i, p. 46, 1877. 

 Cirolaiia californica Hansen, Vidensk. Selsk. Skr., 6th ser., natur. og math. 



Afd., V, pp. 338, 339, pi. Ill, fig. 2, 2f, 1890. 

 Cirolana harfordi Richardson, Proc. U. S. Nat. Mus., xxi, pp. 822, 823, 



1899. 



Zt'^a///y.— Wilson Cove, California (Dr. Ritter and party). 



1 Science, XV, no. 367, Jan. 10, pp. 55-65, 1902. 



(213) 



