Key to the Species. 
A. Head and nape pale brown ; lores and a patch under 
the eye black . . . . . . . . . . C. hicinctuSf p, 86. 
(Summer.) 
B. Lores and a patch under the eye pale brown ; bill 
slender, depth 5 mm. . . . . . . . . C. hicinctus, p. 86. 
(Winter.) 
C. Fore-part of head and nape cinnamon-rufous ; lores 
and a patch under the eye black . . . . C. m. 7 nongolus, p. 92. 
(Summer.) 
D. Lores and a patch under the eye brown ; bill stout, 
depth 6 mm. . . . . . . • • • • .. C. in. mongolus, p. 92. 
(Winter.) 
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