546 



GLOSSARY. 



Immature', a. Not having yet assumed final 

 size, shape, color, or other conditions of the 

 adult. 



Imper'forate, a. Not pierced through ; also, 

 closed up (said chiefly of the nostrils). 



Implacen'tal, a. Having no placenta. Birds 

 are implacental. 



Incised', a. Cut out ; cut away. 



Incuba'tion, n. Act of setting on eggs to hatch 

 them. 



Incum'bent, a. Depressed or bending down 

 upon something ; laid at full length ; chiefly 

 said of the hind-toe when its whole length 

 rests on the ground or other support, owing 

 to its low insertion on the level of the rest. 

 (131.) 



In'cus, a. A bone of the inner ear of mam- 

 malia, held by high authority to be homolo- 

 gous with the OS quadratum of birds (which 

 see). See also Malleus. 



In'dex, n. The principal digit of the wing is 

 often so called, but is really homologous with 

 the third or middle finger of mammals ; the 

 pollex or so-called thumb of birds being the 

 homologue of the mammalian index. 



In'doles, n. Natural disposition. 



Indumen'tum, 7«. Covering of birds ; the pti- 

 losis or plumage. (142.) 



In'fra- {in comiJosition). Below ; under ; op- 

 posite of supra-. It is in part synonymous 

 with siib; but refers only, to position, while 

 suh- is of more extensive application. 



Inframax'illary, n. The under jaw bone, 

 or mandible. 



Infraor'bital, a. Below the eye-socket. 



Infundibu'liform, a. Funnel-shaped. 



Infundib'ulum, n. Funnel ; name of several 

 diff'erent organs. 



Inges'ta, n. pi. Things eaten ; contents of crop 

 or stomach. Opposed to cgcsta. 



Inglu'vies, 7j. Crop or craw. Also used sy- 

 nonj'mously with chin. 



In'guen, n. The groin : whence the adj. in- 

 guinal. (Little used.) 



In'guinal, a. Pertaining to the groin. 



Inner Toe, n. (127.) In most birds the sec- 

 ond is the inner anterior toe ; in the trogons, 

 the third or middle toe becomes inner anterior 

 by reversion of the second, which is then in- 

 ner posterior. In a few exotic kingfishers, 

 the second or inner anterior is rudimentary 

 or wanting. In several birds the hallux or 

 first or hinder toe is reversed, and becomes 

 inner anterioi'. But in any position the inner 

 toe, properly speaking, is the second, that one 

 with only three joints. 



Innom'inate (bone), n. The pelvic bone, com- 

 posed of ilium, ischium, and pubis. 



Inoscula'tion, n. Same as Anastomosis 

 (which see). 



Insectiv'orous, a. Insect-eating. 



Insesso'res, n. 2)J- Perching-birds ; an oi'der 

 now becoming obsolete. 



Insesso'rial, a. Pielating to perching-birds. 



Insis'tent, a. Said of the hind toe, when its 

 base is so elevated that the tip only touches 

 the ground. (130.) 



In'stinct, n. Imperfect reason ; the faculty 

 of doing the right thing witliout knowing 

 why. 



Integ'ument, n. A covering or envelope ; 

 commonly, the skin. 



Inter- {in composition). Between ; among. 



Interartic'ular, a. Between the joints ; in 

 a joint ; as, inter-articular cartilage. 



Intercos'tal, CO. Between two ribs ; as, iriter- 

 costal muscle, artery, vein. 



Intermax'illary {bone), n. Same as Premax- 

 ILLARY (which see). 



In'ternode, n. Any bone of a finger or toe. 



Interor'bital, a. Between the eye-sockets. 



Interra'mal, a. Between the forks or rami 

 of the lower jaw. 



Interrupt' ED, a. Discontinuous ; broken up. 



iNTERSCAPiL'iUMorlNTERSCAp'uLUM, n. Region 

 of the upper back between the shoulders. (58. ) 



Interscap'ular, a. Between the shoulders. 

 The plural, interscapulars or interscapula- 

 ries, is used to denote the feathers of such 

 region collectively. 



Invag'inate, a. Sheathed. 



Inver'tebrate, a. or n. Having no back- 

 bone ; an animal without a backbone. Op- 

 posed to vertebrate. 



I'rian, Irtd'ian, a. Pertaining to the iris. 



Irides'cent, a. Glittering with many colors, 

 which change in different lights. 



I'ris, n. Circular muscular curtain suspended 

 jierpendicularly in the eye between the aque- 

 ous and vitreous chambers, having a hole in 

 the centre (the pupil). It is of all colors in 

 birds. 



Ischiat'ic, a. Pertaining to the ischium. 



Is'cHiUM, 71. One of the pelvic bones, the hin- 

 dermost. 



-IsH. A si;fRx, forming an adjective, usually 

 denoting possession of a quality in less de- 

 gree ; especially used for colors ; as, blackish, 

 not quite black, etc. 



Isth'xMUS, n. Neck or narrow strip connecting 

 two larger portions of same region, patch of 

 color, etc. 



Jaw, n. See Maxilla, Mandible. 

 Jeju'num, 11. Portion of intestine between 



duodenum and ileum (not definite, and little 



used). 

 Ju'gal, a. Pertaining to the zygoma. 

 Ju'gal {bone), n. Same as maker bone. 

 Ju'gular, a. Pertaining to the jugulum. 

 Ju'gulum, n. Lower throat ; lower foreneck. 



(53.) 

 Junctu'ra, n. Articulation ; joint. 



K. 



Keel, n. Same as Gonys (which see). (22.) 

 Knee, n. Femoro-tibial articulation. (N. B. 

 The heel-joint, suffrago, or tibio-metatarsal 

 articulation, is often improperly called kn£e.) 

 (102.) 



La'bel, n. Card, ticket, or similar slip of 

 paper, parchment, etc., affixed to an object, 

 giving written information respecting it. 



