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GLOSSARY. 



HOMOGENEITY, n. Structural similar- 

 ity. 



HOMONYM, n. A word which iu several 

 -ciist's has different meanings; as Syl- 

 vicola, Swainson, a genus of birds (now 

 called Dendroica) is a homonym of 

 S///ricola, Humphreys, previously ap- 

 plied to a genus of mollusks. (Oppo- 

 site of synonym.) 



HOMOTYPICAL, a. Of the same struc- 

 tural type. 



HOMOTOPY, n. A particular kind of 

 homology. 



HORNOTINE, a. or n. A young bird in 

 its first year. 



HUMERAL, a. Pertaining to the hu- 

 merus; or, more generally, to the 

 upper arm. 



HUMERUS, n. The upper arm bone; or, 



the whole of the upper arm. 

 HYBRID, a. or n. The progeny resulting 



from sexual intercourse of distinct 



species. 

 HYBRIDIZATION, n. Production of hy- 



brids. 

 HYBRIDIZE, a. To cross and bear off- 



spring which unite the characters of 



two species. 



HYEMAL, a. Pertaining to winter. 

 HYOID, a. Properly pertaining to the 



os hyoides or tongue bone* but fre- 



quently applied with reference to the 



tongue itself. 

 HYPERCHROMATISM, n. State of highly- 



increased brightness or intensity of 



coloration, or excess of pigment. 

 HYPERTROPHY, n. Unusual develop- 



ment of a part or organ. (Opposite of 



atrophy.) 



HYPOCHONDRIIS, 



Hi-T>r>T,r rrxr 

 .ONDRIUM, 



1H 



HYPOCHONDRIAC, a. Pertaining to the 

 flanks. 



HYPOGNATHOUS, a. Having the max- 

 illa, or lower mandible, longer than 

 the mandible, as in the Skimmers 

 (Rhynchops). 



HYPOPTILUM, n. An accessory plume, 

 attached to the barrel or stem of or- 

 dinary feathers, excepting always the 

 remiges and rectrices. (Essentially 

 the same as aftershqft.) 



HYPORADII, n. Barbs of the hypopti- 

 lum, or aftershaf t. 



HYPORRHACHIS, n. The aftershaft, or 

 stem of the accessory plume, or hy- 

 poptilum. 



I. 



IGNOBLE, a. Said of certain Hawks 

 used in falconry. Technically applied 

 to the short-winged Hawks (that is, 

 the Goshawk and Sparrowhawk) to 

 distinguish them from the noble Fal- 

 cons (that is, true Falcons). 



ILIAC, a. Pertaining to the flanks. 



IMBRICATE, j a. Overlapped, like 



IMBRICATED, ( shingles upon a roof. 



IMPERFORATE, a. Not pierced through. 



INCISED, a. Cut out; cut away. 



INCUBATION, n. The act of sitting on 

 eggs, in order to hatch them. 



INCUMBENT, a. Laid at full length. 

 ( Said of the hallux, or hind toe, when 

 inserted on a level with the anterior 



Iocs. ) 



IXDF.XTKD, a. Notched along the mar- 

 gin with a different color. 



INFRA (in composition). Situated un- 

 der, or beneath. (Opposite of supra, 

 above. ) 



INFRAORBITAL, a. Below the orbit. 

 (Same as suborbital, which is more 

 often used.) 



INFLEXED, a. Turned inward. 



INFUXDIBULIFORM, a. Funnel shaped. 



INGUINAL, a, Pertaining to the groin. 



INNER TOE, n. That situated on the 

 inner side of the foot, whether ante- 

 rior or posterior, but usually the 

 former. (The anterior inner toe is 

 usually the second, but in some zygo- 

 dactyle forms, as the Trogons, it is 

 the third, the second toe being re- 

 versed, thus becoming the inner poste- 

 rior toe. In a very few, as certain 

 Kingfishers, the second toe is rudi- 

 mentary or wanting, while in others 

 the first, or hallux, is reversed, and 

 thus becomes the inner anterior toe.) 



INSECTIVOROUS, a. Feeding on insects. 



INSESSORES, n. An obsolete name 

 formerly applied to an artificial group 

 embracing the Passeres and other 

 "perching" birds. 



INSESSORIAL, a. Pertaining to or hav- 

 ing 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 incum- 

 bent.) 



INTEGUMENT, n. A covering or envel- 

 ope, usually membraneous, as the 

 skin of animals, covering of seeds, etc. 



INTERMAXILLARY, n or a. The princi- 

 pal bone of the upper jaw, or relating 

 to the same. ( Same as premaxillary.) 



