1926] Swarth: Birds and Mammals from the- Atlin Region 145 



The first young out of the nest was seen June 11. During August 

 robins were gathered in noisy flocks, twenty or thirty together, 

 prepai-atory to departure for the south. 



Four specimens were collected (nos. 45009-45012), one adult male, 

 two in Juvenal plumage, and one adult female taken August 16, which 

 had then finished the annual molt. 



Ixoreus naevius meruloides (Swainson). Northern Varied Thrush 

 The varied thrush apparently does not breed in the Atlin region, 

 for it was encountered nowhere during the summer months. First 

 appeared on September 5, when several were seen, evidently migrating 

 southward. A few others were noted, near Atlin and at points between 

 Atlin and Teslin, the last on September 21. One specimen was col- 

 lected, a female taken September 5 (no. 45013) ; it is typical of the 

 subspecies meruloides. 



Sialia currucoides (Bechstein). Mountain Bluebird 

 A fairly common species and with a predilection for human 

 habitations, whether occupied or abandoned. Seen at Carcross, May 22, 

 and at Atlin when we arrived. Young birds were flying about during 

 the second week in July. The bluebirds linger to a later date than 

 most of the summer visitants. I saw a flock of fifteen at Carcross on 

 September 24. 



CHECK LIST OF THE MAMMALS 



1. Sorex personatus personatus I. Geoffrey 



2. Sorex obscurus obseurus Merriam 



3. Neosorex navigator navigator Baird 



4. Mustela cicognanii riehardsonii Bonaparte 



5. Gulo luscus (Linnaeus) 



6. Vulpes alascensia abietorum Merriam 



7. Oanis lestes Merriam 



8. Marmota caligata oaligata (Eschscholtz) 



9. Oitellus plesius plesius (Osgood) 



10. Eutamias minimus caniceps Osgood 



11. Seiurus hudsonicus hudsonieus (Erxleben) 



12. Castor canadensis canadensis Kuhl 



13. Peromyscua maniculatus borealis Mearns 



14. Neotoma cinerea saxamans Osgood 



15. Synaptomys borealis dalli Merriam 



16. Microtus drummondii (Audubon and Baehman) 



17. Microtus mordax mordax (Merriam) 



18. Ondatra zibethica spatulata (Osgood) 



19. Erethizon epixanthum nigrescens Allen 



20. Lepus americanus macfarlani Merriam 



21. Alces gigas Miller 



