20 
GUIDE BOOK TO THE BRITISH MUSEUM. 
Cases 136, 137. The Spur-winged Geese inhabit Asia, Africa, 
and Australia; as the spur- winged goose, black-backed goose, & c. 
Cases 137 — 140. The Geese are found in various parts of the world, 
during their periodical flight ; their food consists of grain and grass ; as 
the New Holland cereopsis, Magellanic goose, Canada goose, barred 
headed goose of India, grey-legged goose, and white-fronted goose of 
Britain, &e. 
Cases 141 — 143. The Swans are remarkable for their graceful ap- 
pearance upon the water, and are found in most parts of the world ; 
they feed on roots of aquatic plants, &c. ; as the whistling swans, black- 
necked swan, &c. 
Cases 144—148. The True Ducks : these birds are inhabitants of 
the lakes and rivers of the interior, but occasionally resort to the sea- 
shore of various parts of the world ; their food consists of vegetables, 
insects and shell-fish, as the red-billed whistling duck of South America ; 
shieldrake, widgeon, pintail duck, common teal, &c., of Britain; 
Chinese teal, and others. 
Cases 148 — 150. The Sea Ducks are principally inhabitants of the 
ocean or saline lakes, and are sometimes found on rivers of the inte- 
rior, seeking for small crabs, shell-fish, &c. ; as the scoter duck, eider 
duck, tufted duck, nyroca duck, red-crested duck of Britain, &c. 
Case 150. The Spinous-tailed Ducks are found in the warmer 
parts of the world, as the lobated duck of Australia, Ural duck, &c. 
Case 151. The Mergansers inhabit the Arctic regions ; their food 
consists principally of fish, &c. ; as the goosander merganser, red- 
breasted merganser, hooded merganser, &c. 
Cases 152, 153 contain the Divers : they form two divisions. 
Case 152. The True Divers are found in northern regions, and 
are rapid divers, feeding on fish ; as the northern diver, black-throated 
diver, &c. 
Case 153. The Grebes inhabit most parts of the world, feeding on 
small fish, crabs, &c. ; as the eared grebe, crested grebe, &c., of Britain. 
Cases 154, 155 contain the Auks; these are oceanic birds, inhabit- 
ing the Arctic circles, feeding on fish and other marine productions, 
and are thus divided : 
Case 154. The True Auks; as the great auk of Orkney, puffin auk, 
razor-billed auk of the British shores, &c. 
Case 155. The Sea Parrots; as the parroquet auk, crested auk, Cape 
penguin, crested penguin, &c. ; the Guillemots ; as the foolish guillemot, 
black guillemot of Britain. 
Cases 156 — 161 contain the Gulls: these birds are divided as fol- 
lows : 
Case 156. The Petrels, which are found in the high latitudes of 
both hemispheres, feed on fish, &c. ; as the diving petrel, stormy petrel, 
Manks petrel, Fulmar petrel, and broad-billed petrel, &c. ; giant petrel, 
wandering albatross, &c. 
Cases 158—160. The True Gulls : they are found in every part of 
the world, feeding on all kinds of animal matter, fish, &c. ; as the Arctic 
gull, glaucous gull, black-backed gull, little gull, &c., of Britain; fork- 
tailed gull, kittiwake gull, &c. 
Case 161. The Terns are met with on every coast in the world, and 
occasionally inland, on the lakes, feeding on marine productions ; as 
