26 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERa) 



DD. Stridulating area of tegmina of type more characteristic of 

 Conocephalus, relatively smaller (except in superbum). Dorsal 

 line of pronotum not appreciably ascending dorso-caudad on 

 metazona. Genicular lobes of caudal femora unispinose. 



E. Lateral lobes of pronotum relatively narrower, without 

 a distinct humeral sinus. 



F. Cercus very attenuate and not flattened distad. 

 Speculum of stridulating field short, rather broad. 

 (Size small.) unispina (Saussm-e and Zehntner) 



FF. Cercus not attenuate but thick and somewhat 

 flattened distad. Speculum of stridulating field rather 

 narrow, elongate (not as extreme as in bradleyi and vol- 

 antum). superbum new species 



EE. Lateral lobes of pronotum relatively broader, with a 

 distinct though shallow humeral sinus. 



fraternum new species 

 CC. Speculum of stridulating field decidedly elongate, very narrow, 

 strongly longitudinal. 



D. Tooth of cercus diverging on a plane with dorsum of cereal 

 shaft, straight, tapering, slightly proximad in trend; distal por- 

 tion of cereal shaft regularly tapering, quite acute, not strongly 

 depressed when seen from lateral aspect. Tolantum McNeiU 

 DD. Tooth of cercus diverging from ventro-internal face, pro- 

 jecting distinctly proximad; distal portion of cereal shaft sub- 

 arcuate, moderately acute, strongly depressed when seen from 

 lateral aspect. bradleyi new species 



FEMALES 

 Females of superbum, unispina and fraternum are unknown. 

 A. Dorsal outline of ovipositor wholly or in greater portion straight. (Length 

 of ovipositor always more than one-half that of caudal femur.) 



B. Ovipositor not equal to two-thirds of length of caudal femur. 



C. Ventral margin of ovipositor regularly arcuate, greatest depth 

 approximately mesad. Ventro-caudal angle of lateral lobes more 

 rounded. volantum McNeill 



CC. Ventral margin of ovipositor straight for over half its length, 

 proximal half of ovipositor subequal in depth, narrowing on distal 

 half. Ventro-caudal angle of lateral lobes more acute. 



bradleyi new species 

 BB. Ovipositor equal to two-thirds or more of length of caudal femur. 

 C. Ovipositor very heavy, ensiform, ventral margin arcuate, greatest 

 depth mesad. Humeral sinus not strongly indicated. 



gladiator Bruner 



CC. Ovipositor narrow, elongate, subequal in depth, both margins 



straight for greater portion of their length. Humeral sinus strongly 



indicated. militare Rehn and Ilebard 



AA. Dorsal outline of ovipositor always regularly, but more or less decidedly, 



arcuate. 



