NO. 16G1. 



OX SOME BRAZILIAN aRASSHOPPERS—REHX. 



123 



form processes in tl\e niiile; tlie dorsum of tlie pronotum is distinctly 

 diamond-shaped, regularl}' narrowing ceplialad and caudatl, but 

 more sharply so caudad; surface of the dorsum with a number of 

 rather regularly placed raised points; lateral lobes with their dor- 

 sal length distinctly greater than their depth. Tegmina about 

 two-thirds the length of the dorsum of the pronotum, coriaceous, 

 the principal veins alone marked; costal lobe greatly developed, 

 the costal field at the middle of the tegmen being wider than the 

 remainder of the same, costal margin concavely emarginate from 

 the greatly developed but rounded lobe to the apex; costal angle of 

 the apex acute; sutural margin slightly arcuate; apex narrow, 

 obliquely and very decidedly sinuato-truncate. Wings reaching 

 very nearly to the apex of the tegmina. Prosternal spine conic, 

 erect, acute, interspace between the mesosternal lobes subquad- 

 rate in the male, slightly transverse in the female; interspace 

 between the metasternal lobes transverse and slightly broader than 

 the mesosternal in- 

 terspace in both 

 sexes. Abdomen 

 slightly compressed 

 in both sexes, the 

 dorsum distinctly 

 keeled and pro- 

 vided with spini- 

 form points which 

 are distinct in the 

 male, almost obso- 

 lete on the exposed 



segments in the fe- fig. IO.Helionotusmikabilis. lateral view of fkm ale type. (XU) 



male; supra-anal plate of the male trigonal, cerci simple, acute styli- 

 form, subgenital plate acute rostrate, distinctly carinate ventrad; ovi- 

 positor jaws of the female very blunt, margins hardly toothed. 

 Cephalic and median femora somewhat inflated in the male, slenderer 

 in the female. Caudal femora about as long as from the apex of the 

 fastigium to the apex of the tegmina, robust proximad, slender distad, 

 pagina with the pattern somewhat irregular and sub imbricate, medio- 

 dorsal carina acute serrato-dentate, the serrations numerous and of 

 two grades, ventral carinse similar but with the serrations less numer- 

 ous, of equal size in the male, smaller in the female, lateral carinas with 

 blunter and shorter denticles, genicular lobes acute; caudal tibiae 

 slightly shorter than the femora, sinuate, spines of the internal 

 margin slightly longer than those of the external. 



General colors of the male broccoli and hair brown; face cinnamon, 

 the antennae isabelline, tips of the processes of the crest and lateral 

 angles of the pronotum cinnamon, which color is also present as a 



