GEN. 71-74 OF KEY. 37 



172. POOSPIZA BILINEATA (CASS.) SOL. 



Black-throated Finch. 



173. POOSPIZA BELLI (CASS.) SCL. 



Bell's Finch. 



174. JUNCO HYEMALIS (L.) SCL. 



*iio\v1ir<l. 



175 ? JUNCO OREGONUS (TOWNS.) SCL. 

 Oregron Snowbird. 



176? JTHSTCO CINEREUS (Sw.) CAB., 

 var. CANICEPS (Woodh.) Cs. 

 Cinereous Snowhird. 



177. SPIZELLA MONTI COL A (GM.) BD. 



Tree Sparrow. 



178. SPIZELLA SOCIALIS (WILS.) BP. 



Chipping- Sparrow. 



178a. SPIZELLA SOCIALIS (WiLS.) Bp., 



var. ARIZONA Cs, 

 Arizona Chipping* Sparrow. 



179. SPIZELLA PUSILLA (WILS.) Bp. 



Field Sparrow. 



180. SPIZELLA PALLIDA (Sw.) BP. 



Clay-colored sparrow. 



180a. SPIZELLA PALLIDA (Sw.) BP., 



var. BREWERI (Cass.) Cs. 

 Brewer's Sparrow. 



181. SPIZELLA ATRIGULARIS (CAB.) BD. 



Black-chinned Sparrow. 



182. ZONOTRICHIA ALBICOLLIS (GM.) BP. 



White-throated Sparrow. 



