RAPTORES— EALCONIDAE— B. BOREALIS VAR. CALURUS. 423 



No. 



Sex. 



Locality. 



Date. 



Collector. | Length. 



Stretch. 



Wing. 



Tail. 



Bill. | Tars. 



870 



3 ad. 

 9 ad. 



Antelope, Nev 

 Camp Grant, 

 Ariz. 



May 28, 1871 



Sept. 26, 1873 



F Bischoff. 













H. W. Henshaw 



1S.86 



47-74 



•5- 3' 



9-32 



0.S4 



2. 12 



Bill black; cere yellow ; legs and feet yellow. 



No. 



Sex. 



Locality. 



Date. 



Collector. 



Length. 



Stretch. 



Wing. 



Tail. 



Bill. 



Tars, i 



1 



S71 

 876 



9 ad. 

 (?jun. 



Camp Grant, 

 Ariz. 

 . do 



Sept. 26, 1873 

 do 



H. W. Henshaw 

 do 







IS. IS 



8. no 



0.S4 

 0.80 



2.70 

 2.49 



1S.74 



47.24 



14. 74 ■ 8. 62 













Iris brown ; cere greenish-yellow ; base, lower mandible, and edge along gape greenish-yellow ; legs 

 and feet yellow. 



No. 



Sex. 



Locality. 



Date. 



Collector. 



Length. 



Stretch. 



Wing. 



Tail. 



Bill. 



Tars. 



877 



3 ad. 



Camp Grant, 

 Ariz. 





H.W. Henshaw 



19.00 



47. S6 



15.00 



8.49 



0. 85 



2.49 





Iris dark-brown ; cere greenish-yellow ; legs and feet yellow. 



No. 



Sex. 



Locality. 



Date. 



Collector. 



Wing. Tail 



Bill. 



Tarsus. 



894 



9 ad. 



Camp Grant, Ariz 



Sept. 29, 1S73 



H. W. Henshaw 



16. 20 j 8. 50 



1. 00 



2.78 



BUTEO BOREALIS (Gmel.), var. CALURUS, Cassin. 



Western Red-tailed Hawk. 



Buteo calurus, Cass., Proc. Acad. Nat, Sci. Pliila., vii, 1855, 281.— Id., Birds N. A., 1858, 

 22.— Bd., U. S. & Mex. Bound. Snrv., ii, pt. ii, 1859, Birds, 3.— Id., P. R. R, 

 Rep., Beckwitb's Route, x, 1859, 11, pi. xiv.— Cotjes, Proc. Acad. Nat. Sci. 

 Phila., I860, 44.— Cooper, Birds Cal., i, 1870, 471.— Stev., U. S. Geol. 

 Snrv. Terr., 1870, 402. — Yarrow, Rep. Orn. Specs., 1871, Wheeler's Exped., 

 1874, 36. 



