390 MICHIGAN SURVEY, 1908. 



mammal fauna of the island. It is not unlikely that the Otter, Lutra 

 luidsonica hiulsonica (Desm.), was a member of this fauna; it wouild 

 be more surprising if it were not. Near the east end of Todd Harbor 

 there is an Otter Lake, but it is very difficult to determine how much 

 reliabilitj' can be put on such place names, as evidence of the former 

 occurrence of animals. The most notorious case in Michigan is that 

 of the Wolverine (which may also have been a resident of Isle Royale), 

 where in spite of the fact that Michigan is called the "Wolverine" 

 State and there are such place names, yet no undoubted records of the 

 occurrence of this animal are known, (cf. An Ecological Survey 

 of the Porcupine Mountains and Isle Royale, p. 131.) In the present 

 connection it is therefore of interest to note that there are several 

 place names about the Isle Royale archipelago which have evidently 

 been derived from the fauna, of which at least one member has become 

 extinct. Reference is made to such names as Beaver and Caribou 

 Islands and to Beaver Lake near the east end of Todd Harbor. Other 

 animal place names worth mentioning in this connection are the fol- 

 lowing: Fish (island). Pickerel (cove), Angleworm and Chicken-bone 

 (lakes, descriptive of their form), Hawk and Gull (islands). The 

 abundance of pickerel, hawks and gulls upon Isle Royale make such 

 names quite appropriate. 



As almost nothing of a general character has been written on the 

 mammals of Michigan, it has been thought desirable to depart from the 

 usual form of an annotated list and include such brief ecological notes 

 as could be secured from available literature, while the geographic 

 data are intended to orient each species geographically. 



The following is, so far as known, a complete list of the mammals 

 recorded from Isle Royale: 



1. Fangifer ccnihou (Gmelin). Woodland Caribou. 



2. i^ciiinis Juidsonicus (Erx.). Hudson Bay Red Squirrel. 

 •T. ('(istor canadensis Kuhl. Northeastern Beaver. 



4. Peromijsms canadensis vmhrinus? (Miller). Isle Royale White- 



footed Mouse. 



5. Evotomys gapperl (Vigors). Common Red-backed Mouse. 



6. Fiber zlhethicus (Linn.). Muskrat. 



7. Lepus americanus (Erx.). Hudson Bay Varying Hare. 



8. Lynx canadensis (Kerr). Canada Lynx. 



0. 3[nstela auiciicana (Turton). Eastern Marten. 



10. PiitoHus vison (Schreber). Mink. 



11. Pntorius cicognanl (Bonap.). Small Brown Weasel. 



12. Putoriiis novehoraccnsis (Emmons). New York Weasel. 



13. Myotis suliiilatiis (Say). Say's Brown Bat. 



14. Myotis lucifiigtis (Le Conte). Le Conte's Brown Bat. 

 1.5. VespertiUo fuscus (Beauv.). Brown Bat. 



2. Mammal Successions. 



While it was not possible to make a detailed study of the ecological 

 distribution of the mammals yet a few relations seem evident which may 

 prove suggestive to others. The succession of vegetation has long been 

 recognized, as it was well known that burned forest lands will in time 

 become invaded by hei'baceous plants, later by shrubs, and finally by 



