XIV 
CATALOGUE OF BRITISH BIRDS. 
Doubtful Species. 
1. Tetrao hybridiis, 141. 
2. Gallinago Sabini, 190. 
3. Gallinago Brehmii, 191. 
4. Cygnus iramutabilis, 209. 
5. Querquedula bimaculata, 215. 
6. Nyroca ferinoides, 223. 
7. Uria ringvia, 244. 
Indigenous Species 114 
Seasonal Visitors (Summer or Winter) 83 
Occasional Visitors 104 
Accidental Visitors 48 
Introduced Species 11 
Doubtful Species 7 
367 
