434 



WRENS, THRASHERS, ETC. 



Exposed culmen equal to or 

 longer than middle toe 

 without claw. 



Toxostoma, p. 437. 



Fig. 547. 



'.Exposed culmen decidedly shorter than middle 

 toe without claw. 



4. Plumag-e light gray, marked with white. 



Mimus, p. 435. 



4'. Plumag'e slaty, not marked with white. 



Galeoscoptes, p. 437. 



Fig 54') 

 1'. Rictal bristles not conspicuous. 



Fig. 550. 



2. Length 7-8 Heleodytes, p. 442. 



2'. Length 3..50-<).50. 



3. Tail equal to or longer than wing ; rail mainly blackish. 



Thryomanes, p. 446. 

 3'. Tail shorter than wing : tail not mainly blackish. 

 4. Outside toe much longer than inner. 



5. Exposed culmen longer than tarsus ; 

 largely rusty brown. 



Catherpes, p. 444. 



-^^ 



5. Exposed culmen shorter than tar- 

 sus ; largely grayish brown. 



Salpinctes, p. 443. 



Fig. 552. 

 4 . Ouiside toe not markedly longer than inner. 



.'). Tail less than three fourths as long as wing. 



01biorchilus,p. 449. 



5'. Tail more than three fourths 

 as long as wing. 

 6. Head without white supercil- 

 iary . Troglodytes, p. 448. \v^' 



Fig. 554. 



6'. Head with white siiperciliary. 



7. Back streaked with white. 



Cistothorus. p. 449. 



Fig. 553. 



Fig. 555. 



