22 Thayer and Bangs Breeding Birds of North Central Sonora. 



Aimophila quinquestriata (Scl.). 

 Opodepe. 



Aimophila carpalis (Coues). 

 Opodepe. 



Aimophila mcleodii Brewster. 

 La Chumata. 



Aimophila ruficeps scottii (Sennett). 



La Chumata. 



Amphispiza bilineata deserticola Eidg. 

 Opodepe. 



Spizella pallida (Swains.). 

 Opodepe. Not taken after the end of April. 



Spizella breweri Cassin. 

 Opodepe. One $ only, taken April 28. 



Zonotrichia leucophrys leucophrys (Forster). 

 Opodepe. 



Pipilo fuse us intermedius Nelson. 



Opodepe. The examples taken appear to be perfectly typical, agreeing 

 with specimens from Alamos and Guaymas, and are not as might be expected 

 intergrades between intermedius and mesoleucus. 



Zamelodia melanocephala (Swains.). 

 Opodepe ; La Chumata. 



Pyrrhuloxia sinuata sinuata Bp. 



Opodepe. 



Cardinalis cardinalis affinis Nelson. 



Opodepe ; La Chumata. Birds from this region have the bill exactly 

 similar to those from Guaymas and Alamos, at once distinguishing them 

 from C. c. superbus or C. c. igneus. The only approach they show to C. c. 

 superbus is that they are a trifle larger than examples from farther south 

 Alamos and Guaymas. 



