GLOSSARY. 



Imbibition. The act of drinking in or ab- 

 sorbing. 



Imbricated. Lapping over each other, 

 like the tiles of a house, or as the 

 scales of some fishes and insects. 

 Tmmaryinate. Being without a margin. 



Immiscible. Not capable of being mixed. 



Immature. That has not acquired its 

 perfect form or full color. 



Impennates. Swimming birds having 

 short wings, as the penguin. 



Impermeable. Not to be passed through 

 the pores by a fluid. 



Imporous. Close or compact in texture ; 

 perfectly solid. 



Impotent. Deficient in natural power, 

 animal or intellectual. 



Impregnated. Rendered prolific or fruit- 

 ful. 



Inarticulated. Not jointed. 



Inaurate. When strise or other impressed 

 parts have a metallic splendor. 



Incised. Cut into equal marginal seg- 

 ments. 



Incisors. The fore-teeth ; the teeth used 

 for cutting or separating the food ; an 

 important generic character in zoolog- 

 ical science. 



Incisure. A deep incision between the 

 segments of an insect, when they re- 

 cede from each other. 



Inconspicuous. Not to be perceived by 

 the sight. 



Incrassate. Disproportionally thick in 

 any part. 



Incruental. Not attended with blood. 



Incubation. The act of sitting on eggs 

 for the purpose of hatching young. 



Incumbent. Lying over another. 



Incurcated. Turned from a rectilinear 

 direction. 



Incurved. Turned inwards or bent for- 

 wards. The apex of a shell is said to 

 be incurved when it is bent inwards, 

 but not sufficiently so to be described 

 as spiral. 



Indeciduous. Not falling off; lasting. 



Indented. Exactly the reverse of dentat- 

 ed ; meaning a series of small cavities, 

 such as might be formed by the en- 

 trance of teeth. 



Indigenous. Produced naturally in a 

 country ; not exotic. 



Individualize. To distinguish the pecu- 



4 



liar properties of one from another: 

 the word individual and its derivatives 

 are, however, rarely applied to any but 

 human beings. 



Inequilateral. When the anterior and 

 posterior sides of a bivalve shell are 

 unequal in length. 



Inequivalve. When one valve is more 

 convex than another, or dissimilar in 

 other respects, as in the common oys- 

 ter. 



Infecundity. Unfruitfulness ; barrenness. 



Inferior Valve (applied only to attached 

 bivalves). The valve that is attached 

 to submarine bodies. 



Inflected. Bent inwards. 



Inflexed. When the head of an insect 

 forms inwards an acute angle with the 

 trunk. 



Infundibuliform. Funnel-shaped. Whose 

 horizontal sections are circular, at first 

 equal and then progressively larger 

 and larger. 



Infuscate. To darken. When a color is 

 darkened by the superinduction of a 

 brownish shade or cloud. 



Inguinal. Pertaining to the groin. 



Innocuous. Harmless ; producing no ill 

 effect. This word is applied only to 

 things, not to persons ; as, there are 

 some poisons used as medicines, which, 

 if taken in small quantities, prove not 

 only innocuous, but beneficial. 



Inocular. When the antenna? are insert- 

 ed in the canthus of the eyes. 



Inodorous. Wanting scent ; having no 

 smell. , 



Inopercular. A term applied to univalve 

 shells which have no operculum, or lid. 



Inorganic. Not formed with the organs 

 or instruments of life. 



Inosculation. The union of two vessels 

 of an animal body at their extremities, 

 by means of which a communication 

 is maintained and the circulation of 

 fluids is carried on. 



Inscribed. When the surface is marked 

 with the resemblance of a letter of any 

 language. 



Insect. A small invertebrate- animal, 

 breathing by lateral spiracles, and fur- 

 nished with articulated extremities and 

 movable antennae. 



Insectile. Having the nature of insects. 



