TERMIXOLOGV 



Air-sacs. Meiubranous receptocles, filled with air, in communication witli the 

 respiratory organs or passages. Pouches are often exaggerated air-sacs. 



Alar bar. A coloured bar across the wing (aZa). 



Allantois. A vascular sack, growing from the hind-gut of the embryo and 

 enclosed Ijy the amnion ; the two fuse together and form the Chorion, 

 which lines the egg-shell, and takes upon itself respiratory functions. 



Altrices or Nidicolae. Nestlings which, being hatclied in a helpless condition, 

 are fed by their parents or inhabit the nest for a consideralile time. 



Amnion. A membrane which grows in the developing egg from the ends and 

 sides of the embryonic area, and encloses the embryo at an early period. 



Bronchi (p. 13). 



Bronchial syrinx. One in which outer tympaniforni membranes exist between 

 two or more successive bronchial semi-rings, while an inner tympaniform 

 membrane may also be present. In typical cases the trachea has no 

 sounding membranes. 



Chest. The same as the upper l)reast or base of fore-neck. 



Chorion. See Allantois. 



Compressed. Used of lateral compression as opposed to vertical (depressed). 



Coverts (tectrices). Feathers that cover the base of the quills {Remige.% oar- 

 feathers) of the Aving and of the tail (Rectrices, steering-feathers). The 

 wing exhibits several series al)ove and below (greater, median, and lesser). 

 Unless otherwise specified, " coverts " in the text refer to uj^per coverts. 



Cabitals. See Secondaries. 



Cuneate. Wedge-shaped. 



Decomposed (p. 3). 



Dep ressed. See Compressed. 



Distal. That end of any part or member which is furthest from tlie 

 imaginary centre or axis of the body. 



Dorsal. The upper side of the body ; and hence applied to the corresjidud- 

 ing surface of any jjart or parts of the structure. 



Filoplumes. Filamentous or hair-like feathers. 



Flanl:s. The portion of the sides near the leg. 



Grad.Mtted. Used of the tail when its feathers diminish in length gradually. 



Hackles. Elongated and pointed feathers, as on the neck of Fowls. 



Hderodactylous (p. 10). 



Hyoid Apparatus. The bony and cartilaginous framework of the tongue. 



Hypocleidium. A projecting median process at the junction (symphysis) of 

 the clavicles. 



Lanceolate. Used of the tongue, when pointed and (commonly) lengthened. 



Lore. The space between the bill and the eye. 



Mantle. The feathers of the upper back combined witli the upper wiug- 

 coverts. 



Manuals. See Primaries. 



Nidicolae. See Altrices. 



Nidifugae. See Praecoces. 



Oll-ylands. Secretory organs near the root of the tail, probaUy used in 

 oiling the plumage. Some exhibit tufts of feathers, others are naked. 



Operculum (p. 11). 



Po.mprodactylous (}>. 10). 



