88 BIRDS OF ILLINOIS. 



Allen, J. A. — Notes on birds observed in Northern Illinois, in 

 June, 1807. <Mim. Boston Soc. Nat. Hist., I., lH<;s. pp. 502 52-1. 

 [9i species.] 



1872. 



l^DtiWAY, Robert. — New birds in Houtbern Illinois. <A)ii. Nat., 

 July, IHT'i, pp. J:iO-431. [Virco beUii, I'cxu-aa <rstiniliii, ( = P. rtstitalui 

 bachmani) Cyanospiza {=Pasgerina) ciris, Asturiiia pLiyiata and Falco 

 poUjagrus added to the fauna of the State (Fox Prairie, Richland 

 county).] 



1873. 



RiDflWAY, RonEUT. — The Prairie Birds of Southern Illinois. <Am. 

 Nat., VII., April, 1873, pp. I'.t7-2i)3. [Based on observations made 

 on Fox Prairie, iliohhiud county, in June and August, 1871. j 



187-1. 



RiDowAY Robert. — Catalogue of the birds ascertained to occur in 

 Illinois. <Ann. Lifc. Nat. Hist., N. Y., X., January, 1871, pp. 3(i4- 

 391. [A list of 311 species, with range of eacii within the State 

 approximately indicated.] 



RiDGWAY, Robert. — The Lower Wabash Valley, considered in its 

 relation to the Faunal Districts of the Eastern Region of North 

 America; with a synopsis of its Avian Fauna. </-*;•. Boston Soc. 

 Nat. Hist., XVI., February 18, 1874, pp. 3n.l-332. 



"OKNEKAL SUMMAllY." 



["Found Irrespective of season 77 



FounJ only In summer 92 



youud only in winter '. 47 



Found only in spring iind fall 71 



Total number of species 288 



Number or species breedinc. about 155 



Number of species wintering, about I55"l 



CouES, E. — Birds of Illinois. < Field and Stream {Chicago), May 

 2, 1874. [A review of Ridgway's "Catalogue of the Birds ascer- 

 tained to occur in Illinois," in Ann. Lye. N. Y., January, 1874, 

 pp. 364-394.] 



