620 OHIO BIRDS. 
[F.] GLOSSARY OF TECHNICAL TERMS USED IN THE 
PRECEDING DESCRIPTIONS. 
The following definitions are compiled from Dr. Coues’ Glossary, in 
Baird, Brewer and Ridgway’s History of North American Birds, iii, 
1874, pp. 535-560. 
A 
Abdomen. Belly; part of gastreum between sternum and anus. 
Aberrant. Deviating from ordinary character. 
Abortive. Suppressed ; remaining or becoming imperfect. 
Acuminate. Tapering gradually to a point. 
Aigithognathous. Waving the palate bones disposed as in a Sparrow or other passerine 
bird. 
After-shafi. Scape or stem of the supplimentary plume springing from many feathers, or, 
oftener, such plume itself, 
Albinism. State of whiteness, complete or partial, resulting from deficiency or entire 
lack of pigment in the skin and its appendages. 
_ Albino. An animal affected with albinism. 
Altrices. Birds reared in the nest and fed by the parents. 
Altricial. Having the nature of Altrices. 
Alula. Literally little wing. The bastard wing, composed of the feathers that are set 
on the so-called thumb. 
Antia. Frontal points; projection of feathers on either side of base of culmen. 
Anus. Outlet of refuse of digestion. In birds the same orifice discharges the products 
of the genito-urinary organs. 
Arcuate. Bow-shaped; bent regularly and gradually. 
Atienuate. Growing gradually slenderer towards an extremity ; or, narrowly produced 
for a jong distance; in either case necessarily sharp-pointed which would be rather 
acuminate. 
Aural or Auricular. Pertaining to the ear. 
Auriculars. Peculiar feathers covering the ear-opening. 
Autumnal Plumage. That ensuing from the first moult, if any, or prior to the spring 
moult, from which it is different in many birds. 
Axillar ox Axillary. Pertaining to the arm-pit. 
Axillaries. Lengthened or otherwise distinguished feathers growing from the axillary 
region. | 
Azygos. Single, in the sense of not paired. 
B 
Back. Upper surface of body proper. 
Band or bar. Avy cross-wise color mark, transverse to long axis of the body. 
Belt. Bar or band of color more or less completely encircling the body. 
Bend of Wing. Angie or prominence formed at carpus in the folded wing. 
