134 University of California Publications in Zoology [Vou. 23 
Type Locality.—Clarence Strait, Alaska,-322 fathoms (‘‘ Albatross’’ station 
3077). 
Distribution.—From Iliuliuk Harbor, Unalaska, to off San Simeon Bay, Cali- 
fornia, 50 to 559 fathoms (Rathbun). Off California this species is not known 
to occur in less than 211 fathoms. 
Fig. 86. Pagurus tanneri, slightly reduced (U. 8S. N. M.). 
Remarks.—This species is closely related to P. confragosus (Benedict, 1892, 
p. 12), the present known range of which extends from the Bering Sea to off the 
Columbia River, Oregon, but as Dr. Benedict remarks, ‘‘The two species are 
readily separated by the inner side of the raised triangle of the large hand. In 
this species [P. confragosus] it cuts off the inner depression of the upper surface 
from the proximal margin of the palm, while in tanneri this depression is allowed 
to reach the margin by a curvature of the ridge.’’ 
