Readio: Ovipositors of Cicadellid.e. 248 



Scaphoideiis immistus (Say). 



(PI. XXIII, fig. 4; pi. XXX, fig. 2.) 



Length, 1.77 mm.; greatest width, 0.11 mm. Narrow and rodliko at base, 

 rest of vahe somewhat broader, about the same width for entire length, nar- 

 rows caudad to ape.\; bears no preapical prominence; distinctly curved, tip 

 greatly narrowed, extreme apex rounded, chitinization moderately heavy; 

 strengthening rod extends caudad as far as fifth dorsal tooth from apex. 

 Toothed area on dorsal edge occupies a little less than the apical two-fifths 

 of the length; teeth sixteen in number, rather small, rounded, rather irregular 

 in size, shape and spacing being farther apart basally; may bear secondary on 

 one or both edges, small secondarj- teeth also pi-esent on margin of valve be- 

 tween primary teeth, general arrangement of secondary teeth very irregular; 

 tip notched with small, irregular teeth on both edges, though more distinct on 

 the ventral edge, not continuous around the tip, eight to nine present on the 

 ventral edge; ducts partly granular and pai'tly elongate, circular openings visi- 

 ble ; open along ventral apical edge, at extreme apex, along dorsal edge of 

 toothed area, and irregularly in the basal region; the two valves of the pair 

 are joined one to the other by an elongate, heavily chitinized connection 

 present on the dorsal edge about midway, occupies about two-fifths of length, 

 bears one rounded tooth somewhat caudad of the center. 



Genus Platymetopius Burmeister. 



The ovipositors of three members of this genus have been ex- 

 amined and found to be similar. In each case the basal half is 

 slightly narrower than the apical half, which bears teeth along its 

 dorsal edge. A preapical prominence may or may not be present. 

 The primary teeth bear secondary teeth on both edges, more on the 

 caudal than on the cephalic edge. In every case the tip is notched 

 with small teeth on both dorsal and ventral edges; these may or 

 may not be continuous around the tip. The area of ducts may or 

 may not be conspicuous, when visible is granular in appearance with 

 the duct openings visible. The two valves of the pair are joined 

 one to the other by a rather short, chitinous connection present on 

 the dorsal edge of the basal area. 



Platy77ietopius acutus (Say). 



(Pl. XXIII, fig. 5; pi. XXX, fig. 3.) 



Length, 1.36 mm.; greatest width, 0.17 mm. Curved basal connection nar- 

 row and rodlike; beyond this is a somewhat wider portion extending nearly to 

 midpoint, and apically the toothed area, about the same width for entire 

 length, narrowing only at apex, bears an indistinct, broadly angled preapical 

 prominence on the ventral edge; slightly though distinctly curved, tip nar- 

 rowed and ending in a bluntly rounded extreme apex, chitinization light; 

 strengthening rod extends caudad as far as fifth dorsal tooth from apex. 

 Toothed area on dorsal edge occupies the apical half of the valve; teeth 

 twenty-seven in number, rather large; in the greater number of teeth the basal 



