XVI SYSTEMATIC INDEX. 



40. Rail tribe.-^ Have the bill somewhat ridged on the back. 



The body is flattened at the sides page 195 



Land Rail, or Corn Crake.. 196 | Water Rail 196 



ORDER VI. SWIMMERS. 



The bill of these birds is somewhat blunt, covered with a skin, 

 and swollen at the base. The feet are webbed, and formed 

 for swimming. 



41. Duck tribe. Have a broad bill, with a nail at the point 

 of the upper mandible ; and sharp teeth at the edges. . . . 197 



Eider Duck 200 



Teal 201 



Widgeon ib. 



Wild Swan 197 



Tame Swan ib. 



Wild Goose & Tame Goose 198 

 Wild Duck & Tame Duck 199 



42. Auk tribe.H&ve the bill flattened at the sides, with 

 transverse lateral wrinkles. The feet have only three 

 toes 201 



Puffin Auk 201 | Razor-bill 202 



43. Penguin tribe. Have the bill straight, narrow, furrowed 

 at the sides, and a little bent downward at the point. 

 The wings resemble fins, and are useless for flight 203 



Crested Penguin ib. 



44. Petrel tribe. Have the bill straight, and hooked at the 



end ; and the nostrils resemble a tube lying on the base 

 of the bill. The feet have each a spur in place of a back 

 toe 204 



Stormy Petrel ib. 



45. Albatros tribe. Have the lower mandible abrupt, and the 

 upper one hooked at the end. The feet have each three 

 toes 205 



Man-of-war Bird ib. 



46. Pelecan tribe. Have the face naked. A skinny bag hangs 

 down from the under mandible 206 



White Pelecan 206 I Shag 207 



Cormorant 207 | Gannet, or Solan Goose . . 208 



47. Diver tribe. Have the bill straight, strong, and pointed ; 

 and the edges of the mandibles bending inward 209 



Northern Diver 210 | Red-throated Diver 210 



Great-crested Grebe 



