412 Dr. A. Hall on the Mammals and Birds 



Slimmer adult plumage. Mantle bluish asli colour ; quills 

 greyish white ; primaries, secondaries, scapulars, tipped with 

 white ; all the other parts white. In winter the head and neck 

 are streaked and mottled with pale wood-brown. The young birds 

 have longitudinal pale brown streaks on the head and neck, and 

 the upper plnmage transversely barred with ash grey and greyish 

 yellow. 



Length 29 inches; alar expanse 44 inches. 



Fam. IV. LameUirostres. 

 Genus Anas. 



Gen. char. Bill broad and large, furnished on the edges with 

 thin salient laminas placed transversely; feet placed far back, not 

 sufficiently so as to incapacitate them from walking, but so as to 

 render them a weak and uneasy kind of waddle ; their wings mo- 

 derately long, and their tail mpie or less acute or round. 



Suh genus Anser. 



Sub gen. char. Bill short, thick, rather compressed, deeper 

 than broad at the base, and depressed at the apex ; marginal 

 teeth short, conic and acute ; nostrils lateral, medial, elliptical, 

 large, open, pervious, covered by a membrane ; tongue fringed on 

 the sides, short and thick; 1st, 2nd, and 3rd primaries longest; 

 tail rounded, of 16 to 20 feathers. 



A. Canadensis. Canada Goose. 



Bernida [Leucohlepharon) Canadensis. Baird ! 



v.s.p. Bill, legs and feet black; irides reddish hazel ; eggs 6 

 to 7 greenish white. 



Dorsal aspect. Head and neck black ; a spot on the brown 

 eyelid, and a uniform patch from the auriculars, meeting its fel- 

 low on the chin, white ; interscapulary region and scapulars dark 

 bi'own, with pale edgings ; secondaries and wing coverts pale 

 brown; primaries and tail black ; rump black; tail coverts white. 



Ventral aspect. Lower part of the neck and sides greyish 

 brown, with pale edges ; centre of the breast and belly greyish 

 white; vent, flanks, and tail coverts white. 



2nd primary longest; 1st and 2nd subequal ; length 37 inches ; 

 alar expanse 60 inches ; length of bill from frontal feathers 2 in- 

 ches and 2 lines ; length of the middle toe and tarsus together 

 6^ inches. 



