Readio: Ovipositors of Cicadellid^. 249 



Dnotura gammaroides (Van Duzee). 



(PI. XXIII, fig. 10; pi. XXXI, fig. 11.) 



Length, 1.8 mm.; greatest width, 0.21 mm. Apical half slightly wider than 

 basal half, tapere caudad to apex; bears only a suggestion of a preapical promi- 

 nence on the ventral edge; slightly curved, tip narrowed with extreme apex 

 narrowly rounded, chitinization moderately heavy; strengthening rod extends 

 caudad beyond last distinct dorsal tooth. Toothed area on dorsal edge occu- 

 pies the apical half; teeth twenty in number, of medium size, in the general 

 shape of a flat, obtuse triangle with the caudal edge longer than the cephalic, 

 rather regular in size, shape and spacing; bear small, regular secondary teeth on 

 both edges, continuous around the apex of each tooth, seven to eighteen on 

 caudal edge, two to se\en on ventral edge; tip notched with small teeth on 

 both dorsal and ventral edges, practically continuous around the tip though 

 greatly reduced at extreme apex; those on ventral edge are larger and more 

 distinct, about fifty-four present on ventral edge; area of ducts conspicuous, 

 granular in appearance, duct openings visible; open along ventral apical edge 

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

 larly in the basal area, the two A'alves of the pair are joined one to the other 

 by an elongate, narrow, heavily chitinized connection present on the dorsal 

 edge of the basal area for its entire length. 



Tliis ovipositor is very similar in general appearance to that of Nephotettix 

 curtipennis. 



Genus Euscelis BruUe. 



The ovipositors of six species of this genus have been examined 

 and a wide variety of forms found within the genus. Euscelis exiti- 

 osus (Uhler) and Euscelis striolus (Fallen), both in subgenus Athy- . 

 sanus, are not similar in any except their grosser details. Euscelis 

 anthracinus (Van Duzee), in subgenus Euscelis, and Euscelis comma 

 (Van Duzee), in subgenus Conomellus, are similar one to the other 

 but not to any other species of the genus examined. Euscelis cur- 

 tesii (Fitch) and Euscelis bicolor (Van Duzee), both in subgenus 

 Stirellus, are very similar one to the other but not to any other spe- 

 cies of the genus examined. 



The ovipositors of the subgenus Stirellus are somewhat narrower 

 in the basal half than in the apical half, which tapers to the apex 

 and bears teeth along its dorsal edge. The teeth differ in number 

 and in the number of secondary teeth they bear. The apex is 

 notched with small teeth present on the ventral edge only. The 

 area of ducts is conspicuous, granular in appearance, with the duct 

 openings visible. The two valves of the pair are joined one to the 

 other by an elongate, chitinized connection present on the dorsal 

 edge of the basal area. 



