GENERAL INDEX. 



GULL. 



vol. PAGE 



Bill strong, straight, bent downwards at the tip, 

 lower mandible gibbous below the point ; nostrils per- 

 vious, broader on the fore part, and placed in the mid- 

 dle of the bill ; tongue a little cloven. 



Black-headed Gull, (Larus ridibundus) . . ix 89 



PETREL. 



Bill a little compressed, hooked at the point ; nos- 

 trils truncate, lying on the base of the bill, for the most 

 part contained in one tube, in some species distinct and 

 separate ; legs small, naked above the knees ; three toes 

 placed forward, back one a mere spur ; wings long and 

 strong. 



Stormy Petrel, (Procellaria pelagicd) . . vii 90 



MERGANSERS. 



Bill toothed, slender, cylindrical, hooked at the 

 point, both mandibles furnished with a strong nail ; nos- 

 trils small, oval, and placed in the middle of the bill; 

 throat toothed ; legs thin and flat ; feet four toed. 



Goosander, (Mergus merganser) . . . viii 68 

 Ditto . . . . . . . ix 131 



Female of ditto . . . . . viii 7 1 



Hooded Merganser, {M, cucullatus) . . . viii 79 

 Red-breasted M. {M, serrator) . . . viii 81 



Smew, or White Nun, {J\I, albellus) . . . viii 126 



