346 RICHMOND, The Western Field Sparrow. Auk 
uniformly paler color of the former, with broader gray streak on 
the crown and almost completely gray ear-coverts. The tail is 
much longer, and the wings usually so, although in some indi- 
viduals of the eastern bird this measurement nearly equals that 
of arenacea. ‘The bill, as a rule, is somewhat larger in the western 
form, but not invariably so. The measurements of a typical 
western specimen and of an average eastern bird are given below: 
Wing. Tail. Tarsus. Culmen. 
Stizella pusilla . 2 : 2.45 Pals 65 33 
Spizella p. arenacea . ao 2.70 2.90 dD 34 
Texan and Mississippi Valley specimens of the Field Sparrow 
havea tendency to longer wings and tails than the eastern birds, 
but frequently without any corresponding paleness of plumage. 
Some of the Texan birds are, however, appreciably paler, but not 
enough so, and also too small, to refer to arenacea. 
Worthen’s Sparrow differs from both forms of the Field Sparrow 
in the total absence of a mesial gray crown stripe and brown post- 
ocular stripe, as well as in some minor details. The wings and 
tail are shorter than in arenacea, but longer than in average pusé//a. 
The geographical range of the Western Field Sparrow as defined 
in the last edition of the A. O. U. ‘ Check-List’ is ‘Great Plains, 
from Texas to Montana and Dakota. Casual at New Orleans, 
La.” The Louisiana specimen was shot in the winter of 1890-91, 
and was reported by Mr. Chapman to be a typical one (Auk, 1891, 
318). Notwithstanding the rather extensive distribution of this 
form, little appears to be known of its habits or nesting, although 
we may safely consider them to be quite like those of the Field 
Sparrow. Specimens of the bird itself are not by any means 
numerous in collections. 
Mr. J. P. N [orris]. has described eggs from Texas purporting 
to be those of this form! as indistinguishable “in size and general 
appearance” from these of Sfzzella pusilla. This record formed 
the basis of Mr. Davie’s reference in his ‘Nests and Eggs.’ It 
1 Ornithologist and Odlogist, XIII, Dec. 1888, 188. 
