126 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



cc. lUU larger, not compressed basally; exposed culmen averaging 12.95 in male, 

 13.46 in female; depth of bill averaging 13.21; upjier jmrts darker and 

 browner. (Guadalupe Island, Lower California. ) 



Carpodacus amplus (p. 142) 



CARPODACUS CASSINII Baird. 

 CASSIN'S PURPLE FINCH. 



Wing- not less than 87.12 (averaging- 91.19), exposed culmen not less 

 than 11.94 (averaging 12.70); under tail-coverts usually conspicuously 

 streaked. 



Adult male. — Pileum dull crimson (brighter in summer), in con- 

 spicuous contrast with general color of upper parts; back and scap- 

 ulars pale vinaceous or vinaceous-pink, more or less mixed with 

 brownish gray, and conspicuously streaked with dusk}"; wings and 

 tail dusk3% with pale vinaceous edgings; rump, postocular stripe; 

 malar region, chin, throat, chest, and upper breast dull rose pink, 

 passing into white on more posterior under parts, the under tail- 

 coverts usually (but not always) with conspicuous mesial streaks of 

 dusky, the sides and flanks sometimes narrowly and indistinctly 

 streaked with the same; auriculai region and a more or less conspic- 

 uous submalar patch brownish; leng-th (skins), 137.16-160.02 (149.61); 

 wing, 89.41-96.52 (92.20); tail, 59.69-69.09 (64.01); exposed culmen, 

 11.94-12.95 (12.70); depth of bill at base, 10.16-11.43 (10.41); tarsus, 

 17.78-20.32 (19.05); middle toe, 13.97-16.51 (15.24).' 



Adnlt female. — Above olive-grayish, conspicuously streaked with 

 dusky; underparts white, sometimes faintl}^ tinged with pale dull 

 bufl'y dn chest and sides, everywhere, except on abdomen, conspicu- 

 ously streaked with dusky, the streaks on throat, chest, etc. , of sharply 

 cuneate form; length (.skins), 140.97-153.67 (145.54); wing, 87.12- 

 91.44 (8S.90); exposed culmen, 12.45-12.70 (12.57); depth of bill at 

 base. 10.16-10.41 (10.28); tarsus, 17.78-20.07 (18.80); middle toe, 

 13.72-15.49 (14.99).' 



^ Twenty-four specimens. 



^ Twelve specimens. 



Specimens from different localities compare in average measurements as follows: 



Localitv. 



Depth 



of bill Tarsus, 

 at base. 



Middle 

 toe. 



M.\LES. 



Twelve adnlt males from California, Oregon, and 

 western Nevada 



Ten adult males from Roeky Mountain district 



Two adult males from southern Mexico (Vera Cruz 

 and San Luis Potosi) 



FEM.\LES. 



Seven adult females from California, Oregon, and 

 western Nevada 



Four adult females from Rocky Mountain district.. 

 One adult female from .>^an Luis Potosi 



14.99 

 15. 49 



15.49 



14.73 

 15.24 

 14.99 



