254 BRAZILIAN ORTHOPTERA 



broken: palpi with third joint elongate, slender; fourth joint shorter than third, 

 very slender at base, gently enlarging distad; fifth joint subequal to fourth 

 joint in length, in proximal third continuing the enlargement of the fourth 

 joint, then regularly narrowing to the apex. Pronotum transverse eUiptical 

 with a rectangulate tendency due to the squareness of the cephalic and caudal 

 margins; greatest width slightly more than one and one-half times the greatest 

 length: cephalic margin sub truncate with a relatively broad median section 

 reaching from dorsad of the internal margin of one eye to that of the other 

 eye, gently arcuate; caudal margin with the faintest arcuation; lateral margins 

 broadly arcuate; latero-cephalic angle hardly indicated, the passage from 

 cephalic to lateral margin being so regular; caudo-lateral angle indicated but 

 broadly rounded; greatest width of the pronotum mesad: disk of the pronotum 

 faintly declivent cephalo-laterad, with a distinct medio-longitudinal impression 

 and paired lateral, sinuate, obhque indentations: lateral sections of the pronotum 

 concave cephalad, faintly bossed over the tegminal bases. Tegmina elongate, 

 greatest width at proximal third, thence regularly narrowing to the narrowly 

 rounded but still acute apex: costal margin arcuate, more strongly so proximad 

 than distad, where it is appreciably flattened; sutural margin straight except 

 for the short but decided proximal arcuation and the distinct distal rounding 

 to the apex: marginal field very broad, deflected into a more horizontal plane, 

 reaching to very nearly the middle of the tegmen; scapular field quite broad, 

 at its widest point broader than the marginal field, tapering in width distad; 

 anal field elongate pyriform: venation well indicated, moderately raised; 

 mediastine vein simple; discoidal vein with approximately eighteen costal rami, 

 between the long, more prominent and proximal of which are equally well 

 deve'oped false nervures, which are difficult to distinguish from the true rami, 

 distad the discoidal vein sends four rami to the sutural margin, of which one or 

 more rami may bifurcate; median vein paralleling the discoidal vein in the 

 median third of the tegmen, bearing three to five rami, one or more of which is 

 bifurcate; ulnar vein simple: anal vein joining the sutural margin at the 

 proximal third; axillary veins five in number. Wings with no true appendicular 

 field but instead a considerable intercalated triangle, which in length is equal 

 to approximately one-fourth that of the remainder of the wing and proximad 

 is acute-angulate; anterior field relatively narrow: costal margin slightly 

 flattened meso-distad: mediastine vein short, direct; discoidal vein with a 

 strongly marked humeral branch, which bears four costal veins; costal veins 

 about sixteen in number, the distal ones not clearly marked, all oblique toward 

 the costal margin, but distal ones wholly oblique, moderately clavate; discoidal 

 vein straight and unforked from humeral branching; median vein simple, faintly 

 arcuate; ulnar vein arcuate distad, there bearing thi-ee rami; axillary vein 

 biramose, the distal one bifurcate: humero-discoidal area with three sub- 

 quadrate interspaces; medio-discoidal area faintly broader than the medio-ulnar 

 area, occupied by fairly regular subquadrate interspaces; medio-ulnar area 

 with only incomplete and indistinct divisions. Abdomen narrowing distad: 

 supra-anal plate transverse, trigonal, the apex narrow and faintly emarginatc, 

 the free margin with a few relatively long bristles: ccrci elongate, depressed 

 fusiform, distinctly attenuate distad: sut)genital plate with a pair of distinct 

 semicircular, folded impressions of the margin and of the plate situated ventrad 



