206 U. S. p. R, R. EXP. AND SURVEYS — ZOOLOGY — GENERAL REPORT. 



below. The peculiar condition of the posterior scutellae in Alaudidae will he found detailed 

 hereafter. In none of these deviations from the highest character in the exhibition of lateral 

 or posterior scales, however, is there any approach to the peculiarities of the Tracheophonea, 

 and the first primary is always either short, spurious, or wanting. 



It is unnecessary to follow the bill or the tail through its modifications, as the characters of 

 both are of secondary importance, and only available for purposes of generic distinction. 



