140 AMERICAN ENTOMOLOGY. 



Incanus, hoary. 



Incisure, or suture of the abdomen, is an impressed transverse 

 line, marking the juncture of two segments. 



Inclining, leaning. 



Inconspicuous, not readily discernible. See obsolete. 



Incmssated, thickened, swelled out at some particular part. 



Incumbent, resting against ', one lying over the other; (wings) 

 which, when the insect is at rest, cover the back of the abdo- 

 men horizontally. 



Incurved, bowed inwards. See recurved. 



Indurated, hardened. 



Inequal, unequal ; with irregular elevations and depressions on 

 the surface. 



Inferior wings, those that are farthest from the head, otherwise 

 called posterior icings; they are generally smaller than the 

 superior or anterior wings; many are provided with hamuli. • 



Inflected, bent inwards at an angle. 



Infracted, bent inwards abruptly, as if broken. 



Infun dibxdiform, funnel-shaped. 



Inner margin, or interior margin, of the wings, is that margin 

 which extends from the base to the posteior angle. 



Jnstltia, stria of equal breadth throughout. 



Instruments cibaria, the trophi; parts of the mouth taken col- 

 lectively. 



Interior edge, or inner edge, the boundary of the inner margin. 

 Interior palpi, the labial palpi. 



Interrupted, broken in its continuity ; but the tips of the broken 



parts are in a right line with each other. See dislocated. 

 Interstitial line, the longitudinal space which intervenes between 

 two strise of the elytra. 



Intorted, turned or twisted inwards. 



Invertebral, those animals which are destitute of the vertebral 

 column. 



Involute, rolled inwards spirally. 



Iris, of an ocellate wing spot, is a circle which surrounds the 

 pupil. 



Irregular, (antennae) articulations strikingly unequal either in 



magnitude or order. 

 Irrorate, marked wi£h minute points ; dew-like. 



