ascertained to occur in Illinois. 381 



{Buteones.) 



Genus Buteo, Cuvier. 



Subgenus Asturina, Vieillot. 



183. B. nitida (Lath.), \a.r. plagiata Licht. Mexican Goshawk. 



Summer visitant to southern portion. (Fox prairie, Richland Co., August, 



1871, one specimen; Ridgway.) 



Subgenus Buteo, Cuvier. 

 * 184. B. lineatus {Gm^l.). Red-shouldered Hawk. Resident. 

 185. B. Pensylvanicus (Wils.). Broad-winged Hawk. Transient. 

 Breeding in northern part? 



*186. B. borealis (Grael.). Red-tailed Hawk; " White-breasted Hen 

 Hawk." Resident. 



Subgenus TarJnjtnorchis, Kaup. 



187. B. Sioainso7ii Boil a Y). Swainson's Hawk. Irregular visitant. 

 Breeding in northern portion ? 



{Archibuteones.) 

 Genus Archibuteo, Brebm. 



188. A. lagopus (Briinn.), var. sancti-johannis 'Penn . American 

 Rough-legged Hawk ; Black Hawk. Winter sojourner. 



{Aquiloi.). 

 Genus Aquila, Auctorum. 



189. A. chryscBtvs Linn., var. Canadensis Linn. American Golden 

 Eagle ; Ring-tailed Eagle ; Mountain Eagle. Winter visitant. 



{Halideti.) 



Genus Haliaetus, Savigny. 



*190. H. leucocephalus (Briss.). Bald Eagle; Gray Eagle; Black 

 Eagle. Resident. 



Family CATHARTID^. The American Vultures. 



Genus Rliinogryphus, Ridgway.* • 



*191. B. aura (Linn.). Turkey Buzzard. 'Resident north to 39°; 

 summer sojourner in northern portions. 



Genus Catharista, Vieillot. 



192. C. atrata (Bartr.). Carrion Crow; Black Vulture. Summer 

 visitant to southern portion. 



f Type Vulture aura Linn. Includes also Cathartes burrovianus Cassin. 



