BRITISH BIRDS. 49 



GENUS 3. URIA. Brisson. 



Sp. 1. U. TROILE. Linnaeus. 



Syn. Colymbus Troile, Linn. Gmel. Uria Troile, Lath. Colymbus 

 Minor, Gmel. Lomwia Hoieri, Ray, Will. Guillemot a Capu- 

 chon, Temm. Le Guillemot, Buff. Foolish Guillemot, and 

 Lesser Guillemot, English Authors. 



Sp. 2. U. GRYLLE. Linnceus. 



Syn. Colymbus Grylle, Linn. Gmel. Uria Grylle, and U. Lacteola, 

 Lath. Colymbus Lacteolus, Gmel. Spotted Guillemot, and 

 Black Guillemot, English Authors. 



GENUS 4. MERGULUS. Ray. 

 Sp. 1. M. MELANOLEUCOS. Ray. 



Syn. Mergulus Alle, Linn. Lath. Gmel. Uria Alle, Temm. Guille- 

 mot nain, Temm. Le Petit Guillemot Femelle, Buff. Little 

 Auk, Penn. Mont. Lath. Bewick. 



GENUS 5. FRATERCULA. Brisson. 



Sp. 1. F. ARCTIC A. Linnceus. 



Syn. Alca Arctica, Linn. Gmel. Lath. Fratercula Arctica, Shaw. 

 A. Labradora, Lath. Gmel. Macareux Moine, Temm. Le 

 Macareux, Buff. Arctic Puffin, Shaw. Common Coulter- 

 nell, Ftem. Puffin, Penn. Mont. Lath. Bewick. 



GENUS 6. ALCA. Linnceus. 



Sp. 1. A. TORDA. Linnceus. 



Syn. Alca Torda, Lath. Gmel. Briss. A. Pica, Linn. Gmel. A. 

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