CALLORHINUS CURILENSIS. 3' 



than the back ; the gray pup is more brownish and less gray than in the Pribilof 

 animal, having a pale patch on each side of the rump. The fore feet have two or 

 three fudimentary claws. 



The seals of Eobben Island and the Kurils differ from both of the foregoing in 

 the whitish color of the under fur. This is rusty brown in ursinus and alascanus, 

 The head is said to be broader again than in ursinus, and photographs show a dusky 

 coloration similar to this species. The fur of the Eobben Island herd is different from 

 either of the others. It was looked upon at first as distinctly inferior in quality, 

 though a change in i)rocess in the removal of the water hair, which is accomplished 

 with much greater difliculty, has removed the discrepancy in value of the fur. The 

 fact remains, however, that these skins must be treated by a separate process. 



The data regarding this third form of the Northern fur seal is inadequate to defi- 

 nitely characterize it, but such information as is at hand points to the probability of 

 its being also a new species. It may be provisionally regarded as such under the name 

 of Gallorhinus curilensis Jordan and Clark, taking the seals of Eobben Island as 

 typical. 



The following is a table showing comparative measurements of typical examples 

 of G. ursinus and G. alascanus : 



Comparative measurements {in millimeters) of typical specimens of fur seals from the Commander and 



Pribilof herds.': - ■ 



Total length 



Nose to end of outstretched hind feet 



Nose to armpit 



Nose to eye r 



Nose to ear .'. . . 



Distance between eyes 



Distance between ears 



Length of ear 



r Length of tail 



' Longest mustache bristle 



Length of forelirab 



Width of forefoot 



Length of hind foot 



Width at tarsus 



Width at end of toes 



Average length of toeflaps 



Distance between tips of outstretched forellmbs 

 Girth— 



Of neckbehmd ears .' 



, Over shoulders...^ 



Behind forelimba." 



^etore hindlitnbs 



Adult male. 



Com- 



1,930 



2,430 



980 



98 



213 



104 



173 



52 



60 



113 



540 



223 



597 



135 



285 



230 



1,740 



1,205 



1,155 



480 



Pribilof. 



1,887 



2,397 



1,058 



115 



216 



127 



306 



64 



61 



i91 



548 



216. 



548' 



166 



191 



344 



1,798 



637 

 1,415 

 1,530 



867 



Adult female. 



Com- . 

 mander. 



1,283 



1,650 



685 



67 

 168 



70 

 138. 



45 



'53 

 125 

 345 

 123 

 416 



95. 



170 



.162 



1,206 



406 

 750. 

 780 



Pribilof. 



1, 262 



1,645 



701 



89 

 181 



89 

 204 



64 



37 

 102 

 402 

 127, 

 408' 

 102 

 115 

 255 

 1,198 



446 

 829 

 739 

 610 



Bachelor. 



Com- 

 mander. 



1,285 



1,656 



660 



80 



I 158 



71 



138 



47 



47 



105 



395 



125 



420 



85 



' 177 



161 



1,086 



406 

 820 



740 



Pribilof. 



1,224 

 1,811 

 '714 

 76 

 166 

 83 

 217- 

 51 

 57 

 102 

 333 

 139 

 327 

 102. 

 102 

 255 

 1,237 



522 

 619 

 791 

 459 



' The measurements of Commander Islands seals were taken by Dr. Stejneger on North rookery of Bering Island in 

 August, 1883 ; those for the Pribilof seals were taken hy Mr. Clark on St. Paul Island in October, 1896. 



The body measurement of these animals can not be relied upon to show permanent 

 conditions, as they necessarily vary according to the physical condition of the animals. 

 Tlius, the measurements of the bull taken on August 20 probably represents the 

 animal after its long fast during the breeding season. The measurements of the Pribilof 

 bull taken in October represented an animal which had been feeding and was well 

 supplied with blubber. Similar differences might easily arise in connection with the 

 other measurements of the body. 



