535 Z)is. Add: Polyborus lutosus. Guadalupe Cauacara. As stated in the 

 Key, p. 540, this species is quite distinct, nearly the whole plumage being barred. The 

 diagnostic marks are tabulated by its describer as follows : " Scapulars plain dusky brown. 

 Tibije and flanks light isabella-color, barred with dark brown. Wing coverts (middle and 

 greater) marked with wide bars of brown and pale isabella-color, of equal width. Tail- 

 coverts and rump with broad bars of light isabella-colov and grayish-brown. Tail with 

 broad bars of pale isabella-color and grayish-brown, separated by zigzag lines of dusky. 

 Abdomen /saie//a-color, with small sagittate bars of dark brown." Wing 15.00-16.50; tail 

 10.50-11.50; bill 1.25-1.35; tarsus 3.50-3.75. Guadalupe Island, Lower California. 



512. Buteo uuicinctus harrisi. 



335. Parabuteo unicinctus harrisi 

 341. Buteo albicaudatus. 



520 bis. Add : Buteo lineatus alleni. Florida Red-Shouldered Hawk. As stated 

 in the Key. p. 546, there is much variation in size, Florida and Gulf specimens being very 

 small. Such examples, having the wing 12.50 or less, tail 8.00 or less, etc., in the male, 

 have received the above name. Pr. U. S. Nat. Mus., yii., Jan. 1885, p. 514. 



