434 
WRENS, THRASHERS, ETC. 
Fig. 546. 
3. Exposed culmen equal to or 
longer than middle toe 
without claw. 
Toxostoma, p. 437. 
Fig. 547. 
3'. Exposed culmen decidedly shorter than middle 
toe without claw. 
4. Plumage light gray, marked with white. 
Mimus, p. 435. 
Fig. 548. 
4'. Plumage slaty, not marked with white. 
Galeoscoptes, p. 437. 
Fig. 549. 
1\ Rictal bristles not conspicuous. 
Fig. 550. 
2. Length 7-8. Heleodytes, p. 442. 
2'. Length 3.50-6.50. 
3. Tail equal to or longer than wing ; tail 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. 
Fig. 551. 
Fig. 552. 
5'. Exposed culmen shorter than tar¬ 
sus ; largely grayish brown. 
Salpinctes, p. 443. 
4'. Outside toe not markedly longer than inner. 
5. Tail less than three fourths as long as wing. 
Olbiorchilus, p. 449. 
Fig. 553. 5'. Tail more than three fourths 
as long as wing. 
6. Head without white supercil¬ 
iary . Troglodytes, p. 448. 
Fig. 555. 
Fig. 554. 
6'. Head with white superciliary. 
7. Back streaked with white. 
Cistothorus, p. 449. 
