Readio: Ovipositors of Cicadellid.e. 239 



angled point, rhitiuization nioderatt'ly light; strengthening rod extends caudad 

 almost to apex. There are no evidences of distinct teeth, though the margin 

 is irregularly roughened in se\eral i)laces; area of ducts conspicuous, granular 

 in appearance, circular duct ojienings visible; ope>n along ventral apical edge, 

 at extreme apex, and along dorsal edge for entire length. 



Xestocephahis pnlicarius Van Duzee. 



(PI. XXIII, fig. 3; pi. XXIX, fig. 1.) 



Length. 0.88 mm.; greatest width, 0.08 mm. Curved basal attachment 

 narrow and rodlike, rest of valve about the same width for entire length; 

 preapical prominence on ventral edge present, distinct, obtuse angled, giv- 

 ing the apical portion of the valve the appearance of a spear head; tip 

 narrowed abruptly beyond preapical prominence; very distinctly, broadly 

 and evenly curved; tip greatly narrowed, ending in sharply pointed ex- 

 treme apex, chitinization medium ; strengthening rod extends caudad to 

 within a short distance of extreme apex; dorsal edge of tip bears an indistinct 

 notch where rod meets dorsal edge. Toothed area on dorsal edge occupies 

 the apical three-fourtlxs of the length; teeth fourteen to fifteen in number, 

 small, indistinct, rather irregular in size, shape and spacing, especially basally; 

 bear no secondary teeth; tip bears no teeth; ducts rather inconspicuous though 

 plainly visible, rather few; open in preapical prominence, at extreme apex, 

 and along entire dorsal edge; the two valves of the pair are joined one to 

 the other by a distinct, elongate, narrow, heavily chitinized connection present 

 on the dorsal edge, this connection more liberally supplied with ducts than the 

 portion of the valve immediately caudad of it. 



Tribe Jassini (Dohrn). 

 Dorycephalus platyrhynchus Osborn. 



(PI. XXIX, fig. 4.) 



Length, 3.5 mm.; greatest width, 0.5 mm. Curved basal portion narrow 

 and rodlike ; at a point about a third of the length it widens into a broad, 

 flat shaft which tajiers slightly caudad; point of greatest width is a little less 

 then midway; only slightly cui-ved beyond base, tip greatly narrowed by 

 rounding dorsal edge, extreme apex rounded, chitinization very light; strength- 

 ening rod extends caudad to within a short distance of the extreme apex. 

 There are no distinct teeth, though the ventral apical edge and the entire 

 dorsal edge are slightly and irregularly roughened; area of ducts inconspicu- 

 ous, no ducts visible, circular duct openings visible; a single row opens along 

 the ventral apical edge, a single row along the dorsal apical edge, distad 

 of these a double row, distad of the double row a triple row, and still further 

 distad in the wider portion of the valve as many as four or five irregular rows 

 open in the entire breadth of the valve. 



Hecalus lineatus (Uhler). 



(PI. XXIX, fig. 8.) 



Lenth, 4.1 mm.; greatest width, 0.43 mm. Curved basal portion narrow and 

 rodlike, widens bej'ond base into broa<l, flat portion which tapers gradually 

 caudad to apex, point of greatest width about two-fifths of length; only slightly 

 curved bej'ond base, tip greatly narrowed, ending in sharp point chitinization 



