Readio: Ovipositors of Cicadellid.e. 233 



number, rather small, in the general shape of a greatly flattened obtuse tri- 

 angle with the caudal side much longer than the cephalic and the apex rounded, 

 rather irregular in size and spacing, slightly more heavily chitinized than the 

 rest of the valve; bear secondary teeth along the caudal edge only, four to 

 fourteen on each tooth; tip notched with teeth on both dorsal and ventral 

 edges, not continuous around the tip, thirteen to fifteen on ventral edge; ducts 

 easily visible for entire length, comparatively few in number, straight, more 

 numerous apically; open apically, along dorsal edge in and near teeth, and in 

 the face of valve back from edge. 



• Kolla hartii (Ball). 



(PI. XXII, fig. 14; pi. XXVIII, fig. 1.) 



Length, 1.4 mm.; greatest width, 0.22 mm. Basal portion narrow and rod- 

 like; apical shaft broad and flat, tapers towards apex; no preapical promi- 

 nence; not curxed beyond base, tip greatly narrowed, extreme apex smoothly 

 rounded, lightly chitinized; strengthening rod extends caudad beyond last 

 doi-sal tooth. Toothed area on dorsal edge occupies entire length of apical 

 shaft; teeth seventeen in number, medium in size, in the shape of an obtuse 

 triangle, though not so flat as in A', bifida and A', geometrica; caudal edge 

 somewhat longer than cephalic edge, rather irregular in size and spacing, not 

 more hea\'iiv chitinized than the rest of the valve; possess small secondary 

 teeth on the caudal edge of each primaiy tooth, eight to seventeen to each 

 tooth; tip notched with small teeth on both dorsal and ventral edges, not con- 

 tinuous around tip, twenty-three on ventral edge; ducts more conspicuous than 

 in K. bifida, less conspicuous than in A. geometrica; bases and apices visible 

 but middle portions invisible; open apicalh', along dorsal edge in and near 

 teeth, and in face of valve back from edge. 



Helochara communis Fitch. 



(PI. XXII, fig. 10; pi. XXVII, fig. 5.) 



Length. L44 mm.; greatest width, 0.22 mm. Basal portion narrow and 

 ciu-ved, apical shaft broad and flat, about the same width for entire length, 

 tapers toward tip; bears no preapical prominence; not curved beyond the 

 base, tip greatlj^ narrowed, with the extreme apex ending in an obtuse point, 

 chitinization mechimi; strengthening rod extends caudad to a point midway 

 between the last dorsal tooth and the tip. Toothed area on dorsal edge oc- 

 cupies the entire length of the apical shaft, nearly the entire length of the 

 valve; teeth thirty in number, rather large, the first fourteen of a general 

 triangular shape, apical sixteen subquadrate with the cephalic side longer than 

 the caudal, rather irregular in size, shape, and spacing; basal fourteen primary 

 teeth bear small secondaiy teeth on the two exposed sides of the triangle; 

 apical sixteen primary teeth also bear secondary teeth on the outer margin, 

 three to fourteen in number; tip is notched with small teeth on both doi^sal 

 and ventral edges, not continuous around the tip, fort5'-six present on venti-al 

 edge; ducts conspicuoiLS, rather numerous, elongate, rather straight, occupy 

 entire shaft; open apically, along dorsal edge in and near teeth, and in face 

 of valve back from edge. 



