314 
ALPHADETICAL . INDEX. 
Uria arra, I2i 
bruennichi, 120 
californica, 1 15 
giylle, 123 
ringvia, 119 
troUc, 1 14 
Urinator, 192 
urogallus, Tetrao, 276 
Utamaiiia torda, 106 
viridanus, Phylloscopus, 300 
vulgaris, Turtur, 254 
Warbler, Greenish Willow, 300 
Pallas’s Willow, 302 
Sub-Alpine, 299 
Water-Rail, 216 
Wedgc-lailed Gulls, 45 
Whiskered Tern, 6 
White-bellied Storm-Petrel, 149 
-billed Diver, 182 
-throated Grey Petrel, 173 
-winged Black Tern, 9 
Willow- Warbler, Greenish, 300 
Pallas’s, 302 
wilsoni, Oceanitc.s, 145 
Wilson’s Petrel, 145 
Wood-Pigeon, 241 
Xema, 41 
sabinii, 41 
yelkouan, Puflinus, 167 
yelkouanus, Puffinus, 167 
Zapornia, 223 
parva, 223, 224 
