CALLORHINITS CURILENSIS. 6 



tliaii the back; the gray pup is more brownish aud less gray tUau in the Pribilof 

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

 three ruuimeutary claws. 



The seals of Robben 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 alascamis, 

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

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

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

 though a change in process in the removal of the water hair, which is accomplished 

 with much greater difficulty, 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 Callorhinus curilensis Jordan and Clark, taking the seals of Robben Island as 

 typical. 



The following is a table showing comparative measurements of typical examples 

 of C. ursinus and C. alascanus : 



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



Fribilof lierds.- 



Total length 



Nose to enfl of outstretcheil hind feet 



Nose to armpit 



Nose to eye 



Nose to ear 



Distance 'octween eyes 



Distance between ears 



Length of ear 



Length of tail 



Longest mustache bristle 



Lcngtli of forelimb 



Width of forefoot 



Length of hind foot. 



Widtli at tarsus 



Width at end of toes 



Average length of toeflajis 



Distance between tips of outstretched forelimbs 

 Girth— 



Of necli behind ears 



Over shoulders 



Beliiud forelimbs 



Before hindlimbs 



Adult male. 



Pribilof. 



Com- 

 mander 



1,930 



2,450 



980 



98 



213 



104 



173 



52 



50 



113 



540 



223 



597 



135 



285 



230 



1,740 



598 

 1,205 

 1,155 



480 



1,887 



2,397 



1, 058 



115 



216 



127 



306 



64 



51 



191 



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 

 415 



95 



170 



162 



1,205 



405 

 750 

 780 

 280 



Pribilof. 



1,262 



1,645 



701 



89 



181 



89 



204 



64 



37 



102 



402 



127 



408 



102 



115 



255 



1,198 



446 

 829 

 739 

 510 



Bachelor. 



Com- 

 mander. 



1,285 



1,655 



660 



80 

 158 



71 

 138 



47 



47 

 105 

 395 

 125 

 420 



85 



177 



161 



1,085 



405 



820 

 740 

 295 



Pribilof. 



1,224 



1,811 



714 



76 

 166 



83 

 217 



51 



57 

 102 

 333 

 139 

 327 

 1C2 

 102 

 255 

 1,237 



522 

 619 

 791 

 459 



I The measuruments of Commander Islands seals were taken by Dr. Stejneger on North rookery of Bering Lsland in 

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



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

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

 Thus, 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 witb blubber. Similar differeuces might easily arise in connection with the 

 other measurements of the body. 



