GLOSSARY OF TECHNICAL TERMS. 
65 
case of many Orioles (Icteridce), Tanagers, and other bright-colored 
Passerine groups. 
Avifauna UnS ' \ °" The bird " life of a P articular country or locality. 
Ax'illa (L.), n. The armpit. 
x / jllar i 
Axillary > ax ^ a ' r ^ i a ' Pertaining to the armpit. 
Ax'illaries { a ^ ares )' n ' ^ more or less distinct tuft of graduated, 
X ,! anes > ) usually soft and elongated, feathers growing from the 
Axillars, ( armp i t . (Plate XIII. fig. 4.) 
Az'ure Blue (L. azu'reus), n. A fine light blue color, like the blue of 
the sky. (Cobalt blue + white.) (Plate IX. fig. 15.) 
B. 
Back (L. dor' sum), n. In descriptive Ornithology, usually includes the 
scapulars and interscapulars, but should properly be restricted to the 
latter alone. (Plate XI.) 
Band (L. vit'ta; fas'cia), n. A broad transverse mark with regular and 
nearly parallel edges ; a broad bar of color. (A broad band is usually 
called a zone.) (Plate IV. fig. 18.) 
Band'ed (L. vitta'tus; fascia'tus), a. Marked with bands. (Plate XV. 
fig. 18.) 
Bar (L. vit'ta; fas'cia), n. A narrow transverse mark of color. (Plate 
IV. fig. 17.) 
Barb (L. bar'bus), n. Any one of the fibrillar, or lamina?, composing the 
web of a feather. 
Barb'ed (L. barba'tus), a. Furnished with barbs ; bearded. 
Barb'ule (L. ba/bulus), n. A barb of a barb. 
Barred (L. vitta'tus; fascia'tus), a. Marked with bars. (Plate XV. 
fig. 17.) 
Base (L. bafsis), n. Root; origin. 
Ba'sal (L. basa'lis), a. Pertaining to the base. 
Bay (L. ba'dius), n. A very rich dark reddish chestnut. (Burnt sienna 
-j- purple madder.) (Plate IV. fig. 5.) 
Bel'ly (L. abdo'men), n. The central posterior portion of the under sur- 
face of the body ; bounded laterally by the sides, posteriorly by the 
vent or anal region, and anteriorly by the breast. (Plate XL) 
Belt (L. bal'tevs), n. A broad band of color across the breast or belly. 
(Distinguished from zone in that the latter may cross the wings or 
tail.) 
Belt'ed (L. baltea'tus), a. Marked with a broad band or belt of color 
across the lower part of the body. 
Bend of the Wing (L. flex'ura; pli'ca), n. The angle or prominence at 
the carpus, or wrist-joint, in the folded wing. (Plate XIII. fig. 5.) 
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