AMERICAN ENTOMOLOGY. 151 



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 Radiated, furnished with lines which proceed from a common 



centre. See stellate. 

 Radicula, radicle; the basal joint of the antenna;, attached to 



the head. 

 Radius, the first nervure of the external edge of the superior 

 wing ; it extends from the base to the carpus, and is separated 

 from the cubitus by a membrane. 

 Ramous, having branches ; branched. 

 Raptatory, formed for seizing a prey. 

 Reclivate, curved in a convex, then in a concave line. 

 Recondite, (amicus) concealed within the abdomen, seldom ex- 

 posed to view. 

 Rectigrade, larvae, which having sixteen feet, walk with a recti- 

 linear body. See geometree. 

 Rectangular, in the form of a right angle ; having an angle of 



ninety degrees. 

 Rectilinear, right-lined ; formed in a straight line. 

 Recurrent nervures, one or more ascending branches of the bra- 

 chial nervures, which are inserted into the cubital cellules, some- 

 times into the first and second, sometimes into the second and 

 third, and others into one only. 

 Recurved, bowed backwards. 

 Reflected, or reflexed, bent back rather angularly. 

 Refracted, bent back as if broken. 

 Remote, further removed than distant. 

 Reni/orm, kidney-shaped. 



Repand, wavy ; with alternate segments of circles and interven- 

 ing angles. See scalloped. 

 Replicatile, capable of being folded back. 

 Resilient, having the property of springing back. 

 Resupinate, upside down ; horizontally reversed. 

 Reticulate, like net-work. 



Retinaculum, horny moveable scales in the Hymenoptera, serv- 

 ing instead of muscles to move the spicula, or to prevent it 

 from being darted out too far. 

 Retracted, opposed to prominent; drawn back. 

 Retractile, generally exserted, but capable of being drawn in. 

 Retrorse, (sinuate) pointing backwards ; (serrate) inversely ser- 

 rated. 



