185 Rad 



Quadrivalvate, Quadrivalvula. — Four-valved. (L. 

 quadri, and valvcr, a folding-door.) 



Radial cellule. — A portion of the membrane of the 

 wing, situated near the apex, inchided between 

 the exterior margin and a nervnre which 

 originates at the carpus and passes, with various 

 degrees of curvature, towards the apex. (From 

 L. radius, a ray, and cella, a cell.) 



Radial nervure. — ^A radiating or cross nervure of 

 the wing. (L. radius, and Gr. neuron, a nerve, 

 cord.) 



Radiate.^ — When a dot, spot, etc., appears to throw 

 off rays ; ex. the large blue area common to the 

 wings of Papilio. (L. radius.) 



Radicle. — The basal joint of the antennse. (Fr. 

 from L. radix, a root.) 



Radicula. — The radicle. The basal joint of the 

 antennae (Say). (L. a small root.) 



Radio-medial nerve. — A transverse or cross-nervure 

 of the wing connecting the radial and medial 

 nerve systems. (L. radius, medius, the middle, 

 and nerve.) 



Radius. — The area lying between the costal cell 

 or area, and the media of the wing. (L. a ray.) 



Radius. — The first nervure of the exterior edge of 

 the superior wing ; it extends from the base to 

 the carpus, and is separated from the cupitus, 

 by a membrane. (L.) 



