86 
OKNITHOLOGISTS' COMPENDIUM. 
In'fra- (in composition). Situated under, or beneath. (Opposite of 
supra, — above.) 
Infraorbital (L. infraorbita'lis), a. Below the orbit. (Same as suborbital, 
which is more often used.) 
Inflated (L. wfla'tus), a. Blown out. 
Inflex'ed (L. inflex'us) a. Turned inward. 
Infundibuliform, a. Funnel-shaped. 
Inguin'al (L. inguina'lis), a. Pertaining to the groin. 
In'ner Toe, n. That situated on the inner side of the foot, whether anterior 
or posterior, but usually the former. (The anterior inner toe is 
usually the second, but in some zygodactyle forms, as the Trogons, 
it is the third, the second toe being reversed, thus becoming the inner 
posterior toe. In a very few — as certain Kingfishers — the second 
toe is rudimentary or wanting ; while in others the first, or hallux, is 
reversed, and thus becomes the inner anterior toe.) (Plate XL) 
Insectiv'orous (L. insecti'vorus) , a. Feeding upon insects. 
Insessoles (L.), n. An obsolete name formerly applied to an artificial 
group embracing the Passeres and other " perching " birds. 
Insessolial, a. Pertaining to or having the character of perching birds. 
Insistent, a. Said of the hind toe when the greater part of its under 
surface touches the ground. (Same as incumbent.) 
In'stinct, n. "A certain power or disposition of mind, by which, inde- 
pendent of all instruction or experience, without deliberation, and 
without having any end in view, animals are unerringly directed to 
do spontaneously whatever is necessary for the preservation of the 
individual or the continuation of the kind." 
Integrum ent, n. A covering or envelope, usually membraneous, as the 
skin of animals, the covering of a seed, etc. 
In'ter (in composition). Between. 
Intermaxillary, n. or a. The principal bone of the upper jaw, or relating 
to the same. (Same as premaxillary .) 
Interorbltal, a. Between the eye-sockets. 
Interrham'al, a. Between the forks or rhami of the lower jaw. 
Interrupted (L. interrup'tus), a. Discontinued, or broken up. 
Interme'diae, n. The middle pair of tail-feathers, or middle rectrices. 
(Plate XI.) 
Interscapular (L. interscapula'ris) , a. Between the scapulars. 
Interscapulars, n. The feathers of the interscapulum, or back. 
Interscap'ulum (L.), n. The region between the scapular tracts, or the 
back proper. (Plate XI.) 
Intertropical, a. Between the Tropics ; tropical. 
Invaglnate (L. invagina'tus), a. Sheathed. 
Inverse', a. Inverted ; upside down. 
I "f,"' \ a - Pertaining to the iris. 
Indian, ) h 
Irides'cent (L. irides'cens), a. With changeable colors, or tints which, 
vary with different inclinations to the light. 
