70 THE GENHRA. 



Aquila — tarsus feathered to toes ; 27 remiges. 178, 179. 

 Archibuteo — tarsus featherless at back ; 24 remiges. 177. 

 Tarsus scutellate in front, reticulate at back ; fifth primary 



longest. 

 Haliaetus — white tail ; 27 remiges. 1 80. 

 Tarsus reticulate back and front ; first primary longer 



than secondaries. 

 Fa/co—legs with breeches ; outer toe not reversible ; bill 



deeply notched. 189-197. 

 Pandion — legs without breeches ; outer toe reversible ; bill 



faintly notched. 198. 

 Tarsus scutellate back and front ; first primary short. 

 Buteo — fourth primary longest ; first four primaries notched ; 



wings long. 176. 

 Circus— 'CaixA. and fourth primaries longest; wings long; 



head with a ruff. 173-175. 

 Acc.ipiter — fourth and fifth primaries longest ; wings short. 



181-183. 



Fringillin^. (Plates vii. viii.) 

 Mandibles crossed. 

 Loxia — 105-108. 

 Upper mandible overhanging. 



Pyrrhula — 102-104. 

 Upper mandible rather larger than lower. 

 Passer — tail square. 93, 94. 

 5^rz«z^j — tail forked. 89,90. 

 Mandibles nearly equal. 

 Tail square. 

 Coccoihraustes—^x\ma.x\&% hooked at the tip. 92. 



Tail forked. 

 Ligurinus — second, third and fourth primaries equal. 91. 

 Carduelis — second primary longer than third, and longest in 



wing. 87, 88. 

 Fringilla — second primary shorter than third, which, or the 



fourth, is the longest in the wing. 95, 96. 

 Linota — second and third primaries nearly equal, and the longest 

 feathers in the wing. 97-101. 



Glareolid^. (Plate xxv.) 

 Glareola — 291. 



Gruid^. (Plate xxv.) 

 Grus — 285, 286. 



HlRUNDININ^. (Plate vi.) 

 Hirundo — 8 1-84. 



Ieidid^. (Plate xviii.) 

 Ibis — 215. 



IcteriNjE. (Plate ix.) 

 Agelceus — 119. 



LANliN^. (Plate vi.) 

 Lanius — 73-76. 



