222 



BULLETIN OF THE BUREAU OF FISHERIES. 



GEOGRAPHIC DISTRIBUTION OF FISHES IN ALASKA AND THE PUGET SOUND REGION. 



For the purposes of the present paper we have considered the territory covered 

 as made up of five divisions, viz: 



1. The Puget Sound-British Columbia region, extending northward to Dixon Entrance and Port- 

 land Canal. 



2. Southeast Alaska, from Dixon Entrance and Portland Canal to Yakutat Bay. 



3. Central Alaska, from Yakutat Bay to the Alaska Peninsula and the Aleutian Islands, including 

 Prince "William Sound, Cook Inlet, and their connecting waters. 



4. Bering Sea, including the Yukon and all other tributary waters in Alaska. 



5. Arctic Ocean, including the Mackenzie and all other tributary waters in Alaska. 



The geographic distribution of fishes in these regions is represented in the fol- 

 lowing tabulation, an examination of which shows some interesting facts. The total 

 number of species recorded is 288. Of these, 7 are found in each of the 5 regions; 

 40 are known from all of the regions except the Arctic; 16 are known from Bering 

 Sea, Central Alaska, and Southeast Alaska, but not from either of the other 2 

 regions. Twenty-two are peculiar to Puget Sound region, 15 to Southeast Alaska, 

 14 to Central Alaska, 55 to Bering Sea, and only 1 (Argyrosomus lucidus) to the 

 Arctic. There are 11 anadromous and 18 strictly fresh-water species. 



The great number of species from Bering Sea shows how much more thor- 

 oughly that region has been studied than have Central and Southeast Alaska; it 

 does not necessarily indicate a decidedly richer fauna. 



Family and species. 



Heptatremid.e: 



Polistotrema deani 



Petromyzonid^e: 



Entosphenus tridentatus.. 



Lampetra aurea 



Squalid.'e: 



Squalus sucklii 



Dalatiidje: 



Somniosus microcephahis . 

 SquatinidvE: 



Squatina squatina 



Rajid^e: 



Raja binoculata 



purmifer;i 



aleutica 



trachi'ra 



abyssicola 



Chim.erid.e: 



Hydrolagus colliei 



Acipenserid.e: 



Acipenser medirostris 



Catostomid.e: 



Catostomus catostomus. . . 

 Synaphobranchuxe: 



Histiobranchus ba1 hybiu 

 Nemichtuyid.e: 



Avocettina gilli 



Clupeid.e: 



Clupea pallasii 



Alosa sapidissinia 



SALMONIIt.K: 



Coregonus kennicotti 



quadrilateralis . 



nelsoni . 



~ -'■ 



- 



Argyrosomus misillus 

 It 



aurettse, 

 lucldu  

 alascanua . 



Family and species. 



Salmonid.e— Continued. 



Stenodus mackenzii 



Oncorhynchus gorbuscha 



keta 



tschawytscha.. 



kisuteh 



nerka 



Salmo clarkii 



gairdneri 



irideus 



Cristivomer naniayeush 



Salvelinus mahna 



Thymallid.e: 



Thvmallus signtfer 



Argentinid^e: 



Mallotus villosus 



Thaleichthys pacificus 



Osmerus thaleichthys 



dentex 



.'i II is I rossis 



Uvpomt'sus pivtiosus 



olid us 



Lrnroglossus stilbius 



Microstomid.e: 



Batbylagus borealis 



MvrTni'HID.E: 



Lampanyctus genuuifer 



Nannobrachium leucopsaruirj . 

 nannochir. . . 



Diapb.ua theta 



Chattliodontidjb: 



Cyclothone microdon 



Chuiiliodus macowni 



ri,A(iVOD(»NTID.E: 



Plagyodus ©sculapius 



borealis 



Notatanthid-e: 

 Macdonaldia challengeri 



+*° 



- — 



- 



