﻿EXTERNAL ANATOMY. TAIL. 1 1 1 



in scansorial types, — the Sylviadce and the Fringillidce 

 for instance, — we esteem it as the first indication of the 

 scansorial structure. 



(103.) The form of the tip or termination of tail 

 feathers, as will appear from what has just been said, is 

 of much importance, as affording both generic and spe- 

 cific characters. Some of these forms have been already 

 noticed ; and we shall now briefly enumerate the chief 

 of those which remain, shortly defining the whole. 

 The point or tip of the tail feathers, are either, 1. 

 truncate, the feathers appearing as if abruptly cut off or 

 squared, as in Lampornis holosericeus (fig. 58. a) and the 

 genus Trogon (b) ; 2. oval, when the end represents one 



extremity of an egg (d) ; S.pointed or lanceolate (/), where 

 there is a gradual diminution to the tip of the shaft, as 



