820 N. C. AGR. EXP. STA. BUL. 239 
fovea, with slight lenticular impressions, without setae, lateral clypeal sutures 
extending onto crown and attaining ocelli; antennal ledges not protuberant, in 
lateral view with anterior margins vertical or slightly oblique, varying from 
convex to concave; face without a vertical lenticular sclerite bordering lateral 
clypeal suture on each side below eye, clypeus convex, not flattened medially, 
median area granular, muscle impressions distinct or not, transclypeal suture 
obsolete at middle, clypellus not produced, its contour continuing profile of 
clypeus, or slightly more nearly horizontal. 
Thorax with pronotal width equal to or slightly greater than transocular 
width of head, lateral margins parallel or slightly convergent anteriorly, dorso- 
pleural carinae complete, posterior margin concave, disk transversely rugulose 
or not in its apical half, not pubescent; scutellum rarely weakly transversely 
striate posteriorly. Forewing with membrane indistinct or variable in extent, 
veins distinct or not, with three closed anteapical cells, the bases of which are 
more proximal than claval apex, with four apical cells, the base of the fourth 
more proximal than base of third, without an anteapical plexus of veins (oc- 
casionally with few supernumerary crossveins in outer anteapical cell); fore- 
wings of female in rest position exceeding apex of ovipositor. Hindleg with 
femoral setal formula 2:1:1; length of first tarsomere equal to or greater than 
combined length of two more distal tarsomeres and with two parallel rows of 
small setae on plantar surface. 
Male genitalia: Pygofer moderately to well produced with anteapical dorsal 
margin concave (exception: J. labyrinthica, n. sp.), with few macrosetae located 
on disk in apical half; pygofer processes absent. Plates narrowly triangular, 
extending as far posteriorly as pygofer apex or not, with small uniseriate 
macrosetae, occasionally with a few macrosetae out of line at apex of plate. 
Style extending posteriorly beyond apex of connective, convex apically or 
truncate (J. praeterita (Fowler)). Aedeagus with shaft slender, moderately long, 
with processes that are variable interspecifically. Paraphyses present or ab- 
sent. 
Female abdominal sternum VII, well produced posteriorly, with postero- 
lateral margins oblique, the apex angular, concave, or narrowly rounded. Ovi- 
positor with second valvula broadened beyond basal curvature, toothed on 
dorsal margin, the teeth widely spaced except near apex, and each with 
smaller secondary teeth, without or with very minute anteapical denticula- 
tions on posterodorsal and posteroventral margins, apex acutangular. 
Isogonalia, new genus, ranges from central Mexico to Panama. I have also 
examined specimens (of /. sexlineata (Signoret)) from Peru and ‘‘Santarem”’, 
Brazil, but these were possibly mislabeled. 
My identification of Tettigonia praeterita Fowler is based on illustrations of 
the female lectotype and male specimens agreeing with the illustrations. 
My identification of Tettigonia sexlineata Signoret is based on an examina- 
tion of the female lectotype. 
Isogonalia, new genus, is in the Graphocephala generic group. It includes 
Amphigonalia, new genus, Manzutus Oman, Campecha Melichar, Allogonia 
Melichar, Decua Oman, Graphocephala Van Duzee, and Plummerella DeLong. All 
of these have lenticular impressions on the crown of the head behind the an- 
terior marginal area except some species of the large and variable genus 
Y 
