GEN. 71-74 OF KEY. 37 



172. POOSPIZA BILINEATA (CASS.) SCL. 

 Black-throated Finch. 



173. POOSPIZA BELLI (CASS.) SCL. 

 Bell's Finch. 



; 174. JUNCO HYEMALIS (L.) SCL. 

 Snowbird. 



. 175? JUNCO OREGONUS (TOWNS.) SCL. 

 Oregron Snowbird. 



176? JUNCO CINEREUS (Sw.) CAB., 

 var. CANICEPS (Woodh.) Cs. 

 Cinereous Snowbird. 



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 ATRIGULAR1S (CAB.) BD. 



Black-chinned Sparrow. 



182. ZO3STOTRICHIA ALBICOLLIS (GM.) BP. 



White-throated Sparrow. 



