ascertained to occur in Illinois. 365 



Order PASSER ES. 



{Oscines.) 



Family TURDIDJE. The Thrushes. 



Subfamily Turdin^. The true Thrushes. 



Genus Turdus, Linnaeus. 



Subgenus Hylodclila, Baird. 



*1. T. mvstelinus Gm el. "Wood Thrush; "Bell Bird." Summer 

 sojourner; abundant. 



* 2. T. fuscescens S t e p h . Tawny Thrush ; Wilson's Thrush. Tran- 

 sient in the southern portion; summer sojourner in the northern part. 



3. T. AHcice Bair 6 . Gray-cheeked Thrush. Transient. 



4. T. Swai7isoni C ah Sin. Olive-backed Thrush ; Swainson's Thrush. 

 Transient, but possibly breeding in the northern part. 



5. T. Pallasii C a b a n . Hermit Thrush ; Rufous-tailed Thrush. Tran- 

 sient, but in mild seasons a winter sojourner south of latitude 39°. May 

 possibly breed in the northern portion. 



Subgenus Planesticus, Bonaparte. 



* 6. T. migratorius Linn. Robin Thrush. Common Robin. Resi- 

 dent. 



Subfamily Miming. The Mocking Thrushes. 



Genus Galeoscoptes, Cabanis. 



*7. G. Carolinensis (Linn.). Cat Bird. Summer sojourner; some- 

 times wintering south of latitude 39°. 



Genus Mimus, Boie. 



.*8. 31. polyglottus (L.). Mocking Bird. "Southern Mocking Bird." 

 Whole state, but common only in the southern and central portions. 

 Summer sojourner, but occasionally wintering south of latitude 39°. 



Genus Harjjorhynchus, Cabanis. 



9. H. rufus (Linn.). Brown Thrasher. "Sandy Mocking Bird." 

 Summer sojourner, but sometimes resident south of latitude 39°. 



Family SAXICOLID^. The Saxicolas. 

 Genus Sialia, Swainson. 



10. S. sialis (Jj inn.'). Blue Bird. Resident. 



