132 



KEY TO FAMILIES 



Fia. 75. 



Family 20. Turdida. 

 THRUSHES, BLUEBIRDS, 

 etc. (Fig. 76). 



Length over 5*50; bill mod- 

 erate, the tip of the upper 

 mandible notched ; tarsus 

 smooth, the scales, if any, 

 fused and indistinct; tail 

 square; wings long and 

 pointed, 3 '75 or over, third 

 primary the longest, the first 

 very short, less than one inch 

 in length, p. 491. 



fourth or fifth primary longest, first 

 very short, not more than one-third as 

 long; tail rather long, dull, ashy gray 

 without white blotches, p. 485. 



Family 19. Sylviidce. KINGLETS and 



GNATCATCHERS (Fig. 75). 

 Length 3 '50-5 '00; bill slender, resem- 

 bling that of some Warblers, but the 

 first primary is very short, only about 

 one-third as long as the longest, p. 488. 



Fio. 76. 



