104 PROCEEDINGS OP THE ACADEMY OP 



sixth (usually about equal to rarely shorter than the seventh). 

 Whig reaching nearly to the end of the tail ; primaries exceed- 

 ing secondaries by about one-third the length of the wing. Tail 

 even. Transverse scutellae on front of the tarsus, 9-13. Color: 

 Tail grayish-brown, or grayish, sometimes with a hoary-cast, 

 usually passing narrowly into whitish at the tip, and crossed by 

 an indefinite number of very indistinct narrow bands of a darker 

 shade. Colors of other portions extreme^ variable. Adult, nearly 

 uniform dusky brown above, the frontlet, concealed bases of occi- 

 pital feathers, and the upper tail-coverts more or less mixed with 

 white ; beneath sometimes pure white, with a broad patch of 

 uniform brown or rufous on the breast, and white throat-patch, 

 but from this light extreme the lower parts vary to uniform 

 dusky chocolate or sooty brown, through intermediate shades of 

 ochraceous or rufous upon which ground deeper-colored bars are 

 visible on portions posterior to the pectoral patch; very rarely 

 the lower parts are irregularly spotted with brown, while the 

 pectoral patch is broken up into similar spotting by the admixture 

 of more or less of white. In the extreme melanistic condition the 

 bird is uniformly blackish-brown, with white bars on the crissum. 

 Young, ochraceous and purplish-black, in relative quantities vary- 

 ing according to the individual; the ochraceous forms the ground 



1075, 9 , ad. (Normal plumage, immaculate white belly). Same locality 

 and date. 2H 54. Weight 2f pounds. Same remarks. 



1291, %, ad. (Normal plumage). Parley's Park, Utah, June 25, 1869. 

 20 50. Weight 2|- pounds. Upper mandible, deep black, scarcely bluish 

 basally ; lower, with basal third light blue ; cere and rictus greenish-gam- 

 boge ; iris burnt-sienna, yellowish on top ; eyebrow olivaceous ; tarsi and 

 toes deep, light chrome-yellow. 



1310, , ad. (Normal plumage). Parley's Park, June 26, 18G9. 19 

 48. Same remarks. 



1335, J, ad. (Fuliginous plumage). Parley's Park, June 28, 1869. 22 

 56 17. Weight 3^ pounds. Bill black, pale blue basally ; cere and rictus 

 greenish lemon-yellow; iris deep brown ; tarsi and toes chrome-yellow. 



1359, % , ad. (Normal plumage, very white below). Parley's Park, 

 July 2, 1869. 20-50}. Same remarks. 



1360, 9 ad. (Fuliginous plumage, very black; mate of the preceding !) 

 Parley's Park, July 2, 1869. 2150^. Weight 2 pounds. Same remarks. 



1501, o, juv. Parley's Park, August 10, 1869. 21 50J. Bill black, 

 becoming pale blue basally ; cere and rictus, fine yellowish -green ; iris 

 yellowish-brown ; tarsi and toes light chrome-yellow. 



