364 APPENDIX G 



marble. Its pouch was lined with worms firmly attached; the 

 stomach also contained some of the same. 



Mergus americaniis Cassin. Merganser. 



This merganser was first observed on Lily Lake, fifty miles 

 north of Edmonton, on May 12. We next noted it on the lower 

 Athabaska on June 4. We saw no more of the species until our 

 return to the Athabaska delta on October 11, when we observed 

 four individuals. 



Mergus serrator Linn. Red-breasted Merganser. 



The red-breasted merganser was noted on the Athabaska 

 River, between Athabaska Landing and Pelican Portage, on 

 May 18 and 19. We next noted it while voyaging among the 

 islands scattered along the northern shore of Great Slave Lake, 

 where we noted it between Stone Island and the Mountain Port- 

 age almost daily, July 18 to 24. We saw it also among the small 

 lakes on Pike's Portage, July 29 and 30; on Artillery Lake, 

 August 7; and on Casba Lake, August 8. We next noted it on 

 our return trip across Great Slave Lake, observing it as follows : 

 near Fort Reliance, September 18; north shore Kah-d'nouay 

 Island, September 23 and 24. Later, while ascending the Atha- 

 baska, we saw it above Fort McKay on October 14, and above 

 Brul6 Rapid, October 23. 



Anas platyrhynchos Linn. Mallard. 



This widely distributed duck was observed near Edmonton 

 on May 10 and 11, and during our voyage down the Athabaska 

 we noted it at various points during the latter part of May. We 

 noted it also near Fort Chipewyan on June 4 and 5, and between 

 Peace River and Smith Landing, June 6 and 7. It was rather 

 common, the females now accompanied by their young, on the 

 upper Nyarling on June 10 and 11. We did not observe it on 

 the eastern part of Great Slave Lake nor in the lake region to 

 the north-eastward. On our return trip, however, we observed 

 it on lower Slave River, September 28, 29 and 30, and between 



