USED IN ENTOMOLOGY. 69 



Interplical: lying between folds; specifically applied to the alternate ridges 

 and grooves in anal area of secondaries of Orthoptcra. 



Interposed sectors: in Odonata; the shorter longitudinal veins occurring in 

 the wings of some species between the chief veins ; = supplementary 

 sectors. 



Interrupted: broken in continuity, but with the tips of the broken parts in a 

 right line with each other. 



Intersegmental: = interarticular; q. v. 



Interspace: Coleoptera; the plane surface between elytral striae: Lcpidop- 

 tcra; spaces between wing veins not included in closed cells. 



Interspaceal: occurring in the interspaces between two wing veins or two 

 elytral striae. 



Interstice -tium: space between two lines, whether striate or punctate. 



Interstitial line: the elevated ridge between two striae or series of punctures. 



Interval: the space or time between two structures, sculptures or periods of 

 development. 



Interventricular: the inner valve between the chambers of the heart. 



Interventricular valvule: of heart, lies in front of semilunar valve. 



Intervenular: in the space between two veins. 



Intestinal caecum: that point of the large intestine in front of the junction 

 with the small intestine. 



Intestine: that part of the alimentary canal through which the food passes 

 from the stomach, in which absorption is completed and the excretions are 

 formed for expulsion. 



Intima: the lining membrane of the trachea: see endotrachea. 



Intorted: turned or twisted inwardly. 



Intra-: within: between. 



Intra-alar bristles: in Diptcra; a row of two or three between the supra- 

 alar and dorso-central groups. 



Intra-cellular: occurring within the cell or in a cell. 



Intra-humeral bristles: in Diptcra calyptrata; occur immediately in front of 

 the thoracic suture, between the humeral callus and the presutural de- 

 pression. 



Intra-ocular: situated within the eye, actually or apparently. 



Intra-pulmonary: that method of respiration which does not involve move- 

 ments of the outer body wall and is confined to the respiratory organs. 



Intra-uterine: applied to development, when the young hatch within the 

 vagina of the mother. 



Intricate: irregular; confused; applied to markings and sculpture. 



Intromittent: used for throwing within. 



Intromittent organ: the penis; q. v. 



Introse-um: directed inward, toward the body. 



Intrusus: seemingly impressed with a sharp point. 



Intumescent: enlarged; swollen; expanded. 



Invaginate: when a tubular or vesicular part is turned inward or retracted 

 within the body wall. 



Invagination: a pouch or sac formed by an infolding or indrawing of the 

 outer surface. 



Investitus: unclothed: a surface without scales or hair. 



