163 

 Gen. LXXXIV. MERGUS. Lin. 



315 sp. * Mergus cucullatus. Lin. The hooded Merganser. 

 Merganser „ „ BorMp. 



Nest. May — June, in holes of trees, by the margin of rivers and fresh-water lakes, in 



North America. 

 Eggs. 5-8, and in colour " perfectly ressemble those of the M. serrator." Audubon. 



315« 



3lb6 



315c 



316 sp. f Mergus albellus. Lin. The Smew. 



Nest, on the margin of lakes and rivers, in the Arctic regions ; in winter it visits periodi- 

 cally the more temperate parts of Europe. 

 Eggs. .' "8-12, whitish." Tern. 



316 « 



316 5 



316 



