Readio: Ovipositors of Cicadellid.e. 247 



Deltocephalus debilis Uhler. 



(PI. XXX, fig. 10.) 



Length, 1.33 mm.; greatest width, 0.15 mm. About the same width for en- 

 tire length beyond curved basal connection, narrows caudad to apex; pre- 

 apical prominence wanting; distinctly curved, tip gradually narrowed, extreme 

 apex rovmded, chitinization moderatelj^ heavy; strengthening rod extends 

 caudad as far as fourth dorsal tooth from apex. Toothed area on dorsal edge 

 occupies apical two-fifths of length; primary teeth thirteen to fourteen in 

 number, small, usually rounded, irregular as to size, shape and spacing; for 

 the most part bear no secondary teeth, though a few irregular secondary 

 teeth are present ; the margin of the valve between the primary teeth is 

 notched with small, irregular teeth; the tip is slightly and irregularly rough- 

 ened, but bears no distinct teeth; area of ducts conspicuous, granular in ap- 

 pearance, though elongate ducts are visible; open along ventral apical edge 

 (five), at extreme apex (one), along dorsal edge of toothed area, and in the 

 basal portion of the valve; the two valves of the pair are joined one to the 

 other by a distinct, elongate, slightly curved, heavily chitinized connection 

 present on the dorsal edge of the basal area, occupying more than one-third 

 the entire length. 



Deltocephalus parvulus Gillette. 



(PI. XXX, fig. 11.) 



Length, 0.87 mm.; greatest w^idth, 0.08 mm. About the same width for 

 entire length beA^ond curved basal connection, tapers gradually caudad to 

 apex; preapical prominence wanting; only slightly curved, tip narrowed, ends 

 in sharp point, chitinization light ; strengthening rod extends caudad almost 

 to last dorsal primary tooth. Toothed area on dorsal edge occupies a little less 

 than the apical half; primary teeth nine to ten in number, very small, rounded, 

 fairly regular in size, shape and spacing, in most cases bear a few secondary 

 teeth; margin of valve between primary teeth also bears small, regular sec- 

 ondary teeth, which point forward; tip devoid of teeth; ducts inconspicuous, 

 their apices and circular openings alone being visible; open along ventral 

 apical edge, at extreme apex, along dorsal edge of toothed area, and in the 

 basal area where elongate ducts are visible; the two valves of the pair are 

 joined one to the other by an elongate, cui^ved, distinct, heavily chitinized 

 connection present on the dorsal edge of the basal area and occupying about 

 one-fifth of the entire length. 



Deltocephalus collinus Boheman. 



(PI. XXX, fig. 12.) 



Length, 1.3 mm.; greatest width, 0.13 mm. Narrow and rodlike at base; 

 beyond base a broader and more heavily chitinized portion extends to mid- 

 point; apical portion is still wider, less heavily chitinized, tapers caudad api- 

 cally; preapical prominence wanting; slightlj' curved, tip greatly nan-owed, 

 extreme apex nan-owly rounded, rather blunt, chitinization moderately light; 

 strengthening rod extends caudad as far as seventh primary tooth from apex. 

 Toothed area on dorsal edge occupies a little less than the apical half; about 

 seventeen primary teeth present, these are small, somewhat rounded, very irreg- 



