GEN. 13-17 OF KEY. 
3lb. PARUS ATRICAPILMUUS L., 
var. CAROLINENSIS (Aud.) Cs. 
Carolina Chickadee. 
3lc. PARUS ATRICAPILLUS L., 
var. OCCIDENTALIS (Bd.) Cs. 
Western Chichadee. 
32. PARUS MONTANUS Games. 
Wountain Chickadee. 
33. PARUS HUDSONICUS Forster. 
Hudsonmian Chichadee. 
34. PARUS RUFESCENS Towns. 
Chestnut-backed Chickadee. 
35. PSALTRIPARUS MINIMUS (Towns.) Bp. 
Least Titmouse. 
36. PSALTRIPARUS PLUMBEUS Bp. 
Piumbeous Witmouse. 
37. AURIPARUS FLAVICEPS (Sunp.)Bp. 
Wellow-headed Vitmouse. 
38. SITTA CAROLINENSIS Gm. 
W hite-bellied Nuthatch. 
38a. SITTA CAROLINENSIS Gm., 
var. ACULEATA (Cass.) All. 
Siender-billed Nuthatch. 
39. SITTA CANADENSIS L. 
Bed-bellied Nuthatch. 
40. SITTA PUSILLA Lartu. 
Brown-headed Nuthatch. 
41? SITTA PYGM/AA Vic. 
Pygmy Nuthatch. 
42. CHRTHIA FAMILIARIS L. 
Brown Creeper. 
11 
