Readio: Ovipositors of Cicadellid.e. 225 



invisible. The apex may or may not bear small teeth along one 

 or both edges. A ohitinous connection is present on the dorsal edge 

 of the basal area in some species. 



Idioccrus ncrvatus Van Duzee. 



(PL XXV, fig. 9.) 



Length, 1.4 nun.; greatest width, 0.12 nun. Apical portion slightly wider 

 than basal portion; shghtly curved, tip greatly narrowed with the extreme 

 apex bluntly rounded, veiy lightly chitinized; strengthening rod extends 

 caudad as far a^; eleventh doi-sal tooth. Toothed area on dorsal edge occupies 

 the apical two-fifths of the length; teeth fourteen to sixteen in number, large, 

 long, rounded, regular, evenly spaced, though somewhat farther apart basally; 

 bear no secondary teeth, though the margin is irregularly roughened; the tij) 

 is notched on' both edges with small, forward-pointing teeth, eight appear 

 ventrally, one to three dorsally; area of ducts inconspicuous, circular openings 

 alone visible; of these four open ventrally, three apically, and many dorsally. 

 There is no evidence of a chitinous connection. 



Idiocerus pallidus Fitch. . 



(PI. XXII, fig. 1; p!. XXV, fig. 5.) 



Length, 2.4 mm.; greatest witlth, 0.25 mm. About the same width for 

 entire length; slightly curved, tip bluntly rounded, heavily chitinized; strength- 

 ening rod extends caudad as far as ninth dorsal tooth. Toothed area on 

 doi-sal edge occupies a little more than the apical third; teeth fourteen in 

 number, large, rounded, regular, evenly spaced except basally, where they are 

 farther apart; secondary teeth only on last eight primary teeth, these very 

 small and indistinct, especially on those farthest from the tip. where they can 

 be seen only with the aid of high-power magnification; the tip is notched with 

 small, regular teeth on both dorsal and ventral edges; area of ducts con- 

 spicuous, ducts elongate, large, straight; six open along ventral apical edge, 

 one in extreme apex, and many along the dorsal edge. A rather indistinct 

 chitinous connection is present on the doi-sal edge of the basal area and joins 

 the two valves of the pair. 



Idiocerus diizeei Provancher. 



(PI. XXV, fig. 6.) 



Length. 2.6 mm.; greatest width, 0.34 mm. Apical portion slightly wider 

 than basal portion; slightly curved, tip ends in somewhat rounded, obtuse 

 point, heavily chitinized; strengthening rod extends caudad as far as sixth 

 dorsal tooth. Toothed area on dorsal edge occupies a, httle less than the 

 apical half, teeth nine to ten in number, large, somewhat angular, regular, 

 evenly spaced, but larger and farther apart basally, teeth one and two being 

 veiy large, rounded, and heavily chitinized; all the primary teeth except 

 teeth one. two and three are notched with small secondary teeth; tip is 

 notched with many small, regular teeth on both dorsal and ventral edges; 

 ducts conspicuous, rather small, straight, open by circular openings; six open 

 along the ventral apical edge, one in extreme apex, and many along the 

 doi-sal edge; there is no well-defined chitinized connection between the two 

 valves of the pair. 



