GLOSSARY 
OF 
TECHNICAL TERMS. 
Bill compressed.— When the bill is narrowed, by the mandibles being pressed 
in laterally. Pl. 3. Fig. 1. 
apace: cultrated.— When each mandible is shaped like a ploughshare, with 
sharp edges. Pl. 1. Fig. %. 
soo0ee subulated.—When the bill is long and slender, and shaped like an 
awl. Pl. 3. Fig. 9. 
255009 conical.—PIl. 4. Fig. f. 
Seerss subconic.—Approaching to the conical form. Pl. 3. Fig. 10. 
aenoes depressed.—W hen the bill is flattened, by the mandibles being pressed 
perpendicularly. Pl. 3. Fig. 4. 
doodee culminated. When the central ridge of the upper mandible is very 
prominent. Pl. 1. Fig. 17. 
“00009 quadrangular.—Of a square form. PI. 2. Fig. 4. 
“on00C subquadrangular.—A pproaching to a square form. PI. 2. Fig. 5. 
“nc One carinated.— When either mandible has a prominent ridge or keel. Pl. 1. 
Fig. 13. 
200000 inflated.—When the sides of the mandibles bulge out. PI. 3. Fig. 13. 
eae emarginated.— When either mandible is slightly notched towards the 
extremity. Pl. 3. Fig. 2. 
eanceD deflected._ When the upper mandible is rather bent downwards to 
the point. Pl. 4. Fig. 3. 
Cere.—The naked skin at the base of the bill, in which the nostrils are si- 
tuated in certain genera. PI. 1. Figs. 1, 2, 3, &c. a. 
Claws retractile.—Capable of being drawn back into a sheath, as in the 
Falcon tribe. 
Culmen.—The central ridge of the bill. 
Feathers elongated._Lengthened, as in the crests of certain birds. 
reno CLOSE acuminated.—Drawn to a fine point, as in the neck feathers of 
the Eagles. 
