GEN. 71-74 OF KEY. 
172. POOSPIZA BILINEATA (Cass.) Sct. 
Black-throated Finch. 
173. POOSPIZA BELLI (Cass.) Scr. 
Bell's Finch. 
174. JUNCO HYEMALIS (L.) Sci. 
Snowbird. 
175? JUNCO OREGONUS (Towns.) Sct. 
Oregon Snowbird. 
176? JUNCO CINEREUS (Sw.) Cas., 
var. CANICEPS (Woodh.) Cs. 
Cinereous Snowbird. 
177. SPIZELLA MONTICOLA (Gm.) Bp. 
Tree Sparrow. 
178. SPIGELLA SOCIALIS (Wits.) Bre. 
Chipping Sparrow. 
178a. SPIZELLA SOCIALIS (Wus.) Br., 
var. ARIZONSE Cs, 
Arizona Chipping Sparrow. 
179. SPIZELLA PUSILLA (Wus.) Bp. 
Field Sparrow. 
180. SPIZELLA PALLIDA (Sw.) Br. 
Clay-colored Sparrow. 
180a. SPIZELLA PALLIDA (Sw.) Bp., 
var. BREWERI (Cass.) Cs. 
Brewer’s Sparrow. 
181. SPIZELLA ATRIGULARIS (Cas.) Bp. 
Black-chinned Sparrow. 
182. ZONOTRICHIA ALBICOLLIS (GM.) Bp. 
White-throated Sparrow. 
