OF ORNITHOLOGY 157 



Terete, nearly cylindrical, having the transverse section nearly 

 circular. 



Terminal, at the end. 



Terrestrial, pertaining to the ground. 



Tertiary quills, Tertiaries, the quill feathers of the upper arm. 



Thigh, the thigh of a bird is represented by the femur or thigh- 

 bone. 



Throat, the throat of a bird is, really, divided into 2 regions : 

 the upper or gula region, and the lower or jugulum. 



Thumb, the small outer bone of the wing, also called bastard 

 wing or alula " little wing." 



Tibia, the inner leg bone (both tibia and fibula are usually 

 spoken of together as the tibia in describing birds). 



Tomia, the cutting edges of the mandibles. 



Totipalmate, fully or wholly webbed (not incised anywhere). 



Trachea, the windpipe. 



Transverse, crosswise, up and down. 



Trifid, having three divisions or parts, divided into three parts. 



Trilobate, three lobed. 



Truncate, cut or broken off at the top. 



Tubercles, small wart-like raised surfaces on the skin. 



Tubular, having the shape of a tube. 



Tumid, rough and uneved, swelled out, (with skin soft.) 



Turgid, rough and uneven, swelled out, (with skin hard.) 



Typical, a Type, a specimen best illustrating any given group 

 or series, or series of groups. 

 U. 



Ulna, the outer of the two bones of the forearm. 



Unguiculate, claw-like. 



Unguis, the nail (applied to the bill and sometimes the claw). 



Upper tail coverts, upper wing coverts : the small feathers cov- 

 ering the base of the tail or wing above ; under tail 

 coverts, under wing coverts, the same below. 

 V. 



Vaulted, arched (like the roof of the mouth). 



Vascular, furnished with little pits (like the extremity of a 

 Snipe's bill). 



