GEN. 13-17 OF KEY. 11 



31b. PABUS ATBICAPILLUS L., 

 var. CAROLINENSIS (Aud.) Cs. 

 Carolina Chickadee. 



Sic. PABUS ATBICAPILLUSL., 

 var. OCCIDENTALIS (Bd.) Cs. 

 Western Chickadee. 



32. PABUS MONTANUS GAME. 



Mountain Chickadee. 



33. PABUS HUDSONICUS FORSTER. 



Hudsonian Cnickadee. 



34. PABUS BUFESCENS TOWNS. 

 Cnestnut-backed Chickadee. 



35. PSALTBIPABUS MINIMUS (TOWNS.) BP. 



I^eat Titmouse. 



36. PSALTBIPABUS PLUMBEUS BD. 



Plumbeous Titmouse. 



37. AUBIPABUS FLAVICEPS (SUND.)BD. 



Yellow-headed Titmouse. 



38. SITTA CABOLINENSIS GM. 



Nuthatch. 



38a. SITTA CABOLINENSIS GM., 



var. ACULEATA (^Cass.) All. 

 Slender-billed Nuthatch. 



39. SITTA CANADENSIS L. 

 Red-bellied Nuthatch. 



40. SITTA PUSILLA LATH. 

 JBrown-headed Nuthatch. 



41? SITTA PYGM^IA VIG. 

 Nuthatch. 



42. CEBTHIA FAMILIABIS L. 

 Brown Creeper. 



