224 



SINGING niRDS — OSflXES. 



This species 1ms usually licen considered a variety nf P. schistacea, liut the 

 figures Ave give on the preceding page Avill sulticiently show the difference. 

 The true schistacea belongs to the Eocky ^Mountain region, and has a much 

 slenderer bill, as indicated in the figures. 



Genus CALAMOSPIZA T'.ox.\rARTK. 



Cnlumoapiza, BoNArARTE, List, 1838. (Tvpe, ynnr/Hla hlrolor, Townsend.) 



Gf.x. Cu.\u. Bill ratlu'i- large, much swollen at the base ; the culmen Ijroad, gently 

 but (lecideiUy curved ; the gonys nearly straight ; the commissure much angulated near 

 the base, then shghtly sinuated ; lower mandible nearly as deep as the upper, the mar- 



C. bicolor. 



gins much inflected, and .shutting under the upper mandible. NostriLs small, strictly 

 basal. Rictus quite stiffly bristled. Legs large and stout. Tarsi a little longer than the 

 middle toe ; outer toe rather longer than the inner, and reaching to the concealed base of 



