542 



THE FUR SEALS OF THE PRIRILOF ISr.ANDS 



The characteristic mariuc forms of the faima are Chitonidue, limpets and Bucci'- 

 nidae, of which several highly characteristic forms occur. I have added the giant 

 squid, Onijchoteuthis, SiS I have heard that specimens have been cast ashore at St. 

 Paul, tliough no naturalist has seen them. Occurring as they do at Unalaska, it 

 would be strange if they did not also extend their range to the Pribilof group. A few 

 s[)ecies have so far been found only in this locality, but there is no reason to su})pose 

 that they are actually restricted to it. Such are Chrysodomus insuJaris, IStromhella 

 fraf/ilis, and Beringius frielci, of the plateau fauna; and Strombella callorhina and 

 Bucci imm fischeriauum, of the shore fauna. St. Paul seems to be the source of neaily 

 all the specimens of StromheUn herlngi Midd., which have hitherto been collected. 

 Altogether <S(» forms are known from the groui), of which 0(5 have been collected on 

 Sf. Paul and 42 on St. Cleorge; 17 are common to California, 72 to the Aleutian 

 Islands, 42 to the Arctic fauna, 31 to Kamchatka, and 10 to the northern islands of 

 Japan. All of the hitter are common to the American shores, so it can not be said 

 that there is any characteristically Asiatic element in the fauna. 



For comparison, I have added a similar list of the species of the Commander 

 Islands, in which we have a squid, one land shell, one fresh-water shell, and one chiton, 

 wliich are known elsewhere only on the Asiatic coasts, a proportion out of 74 sjjecies 

 which can not be said to be large. Besides the mollusks an ascidian, Boltenia beringi, 

 was described by me from St. George, and a brachiopod, Uhiinchonella {Hemithyris) 

 psittacea, is abundant at times on the beaches of St. Paul Island. 



Pribilof Islands, Bering Sea. 

 FAUNAL SUMMARY. 







u 



§ 



o 



Si 



Range. 



Species uleiititied. 



1 



a 

 M 



a 



a 



a 



<u 



o 

 <1 



CD 



a 



B 



D 

 X 









X 



u 











P 



V 







X 









X 

 X 

 X 







A 





"v" 

 u 



u 



D 



X 

 X 



X 

 D 

 D 

 D 

 U 

 D 

 I) 





( 'rvi)t(>cliit<»ii Stfllcri Midd . -. 



w 



D 

 I) 

 D 



X 











Aiiiicula PiilKisii Alidd .- --- 











Tracli v^lGriiion ruber (L ) Cpr 



D 

 D 



X 

 X 



X 

 X 











D 



ToDirt'lla siicrharina Dall 



I) 

 U 





Xouicellji liiicatti \\'ood 



X 



D 

 D 

 U 

 D 

 U 

 1) 

 D 





X 



n 



I) 





D 





D 





D 



» 







D 

 D 

 D 



n 



D 

 D 

 U 

 1) 

 U 



D 



Acmaea (Juiiiiiigi live . 



X 



1> 









D 



Acinaea syi>;iritica Dall ...... . 



X 









Acniaea apiC'iiia I^all . 











Le]teta conceiitric.i Alidd .......................... 















M 



W 

 X 





































D 

 D 













Lituriiia subtenebrosa Midd. .... .... . 







X 





Haloi'ODoba rotiexa J^all .... -.. 



D 







D 

 D 

 D 

 D 

 1) 

 1) 

 D 

 D 

 D 

 D 





Ciii^ula Martvni J)all 



D 











Acrybia tiava Gould 



W 







D 







D 

 D 

 X 

 D 















D 



I) 

 D 

 D 

 D 













X 

 X 

 X 





b 



X 

 D 











D 

 D 



X 



D 



Trichutropia iuaiguis Midd 





