i8S6.] Scott on the Birds of Arizona. 24Q 



S. pnsilla aroiacea (average of two specimens), tail, 2.S8 ; 

 wing, 3.52. 



S. pnsilla from Texas (average of ten specimens), tail, 2.S6 ; 

 wing. 2.61. 



S. pnsilla from Massachusetts (average often specimensj, 

 tail, 3.63 ; wing, 2.43. 



S. "iVortheui (type specimen), tail, 3.60; wing, 3.68. 



Through the courtesy of the National Museum I have been 

 able to examine the type of Spizella xvorthoii^ and I find that it 

 has no trace whatsoever of the median stripe through the crown, 

 or of the chestnut auriculars ; there is but one wing-band, and the 

 general eflect is as dark as in S. socialis arizoncB. The wing is 

 also longer and the tail shorter than in the new race. In short, 

 the two birds seem to have no close relationship. 



ON THE AVI-FAUNA OF PINAL COUNTY, WITH 



REMARKS ON SOME BIRDS OF PIMA AND 



GILA COUNTIES, ARIZONA. 



BY W. E. D. SCOTT. 



With annotations by J- A. Allen. * 

 I. 



By referring to a map of Arizona the reader will see that Tuc- 

 son lies on the iiith meridian west of Greenwich and on the 33d 

 parallel of latitude north. The countr}' under consideration in 

 the present paper extends north of Tucson eighty miles, and 

 south fort}' miles ; and, taking the iiith meridian as a median 

 line, twenty-five miles each side of that line gives about its east 

 and west bovmdaries. This area is therefore one hundred 

 and twenty miles long, in a north and south direction, and fifty 

 miles wide, from east to west. In this parallelogram are one 



*A large part of the collection (some 2400 specimens) on which Mr. Scott's paper is 

 based is now in the possession of the American Museum. of Natural History, and 

 many other specimens have been submitted to me for inspection. The large series of 

 specimens thus brought together frequently present special points of interest, and the 

 remarks based thereon in the subsequent papers of the present series are added by 

 the kind request of Mr. Scctt. — J. A. ALLEN. 



