JAMES A. G. REHN 355 



distad to the latter, which is rounded slightly acute-angulate, disto-sutural 

 margin oblique truncate, disto-sutural angle broadly rounded obtuse, sutural 

 margin straight in greater part: marginal field equal to slightly less than one- 

 third of the entire tegminal width, subequal in width proximad, attenuate in 

 distal half of tegmen; discoidal field broad, its greatest width at distal fourth of 

 tegmen: mediastine vein very short, poorly defined; median vein diverging at 

 two-fifths the length of the tegmen from base of the same, bifurcate, the 

 rami strongly sinuate; ulnar vein in general straight, weakly sinuate, multi- 

 fractured distad, reaching the margin at the disto-sutural angle. Exposed 

 portion of wings surpassing the tegmina by about one-fourth the greatest 

 length of the latter, in form with the apex weakly acute, the sutural margin 

 of the exposed portion of the closed wings straight oblique, the costal margin 

 of same straight with a strong distal arc to the apex. Mesosternum and meta- 

 sternum transverse, the former strongly so, both arcuate laterad with the 

 lobes little reflexed. 



Abdomen strongly compressed: supra-anal plate linguiform, the apex 

 moderately acute, a distinct and broad medio-longitudinal sulcus present: 

 cerci simple, styliform, base relatively incrassate, strongly tapering mesad, 

 distal portion very slender, needle-like, acute, the whole cercus in general form 

 slightly inbowed: ovipositor slightly shorter than the combined length of the 

 head and pronotum, moderately arcuate, weakly bent proximad, greatest 

 depth contained two and one-half times in the greatest length of the ovipositor, 

 dorsal margin almost entirely and distal fifth of ventral margin serrulate, apex 

 rounded, ventral valves with greater portion of surface obliquely and rather 

 closely striatulate: subgenital plate small, trigonal, apex rounded, laterad with 

 surface impressed. 



Cephalic femora about three-fourths as long as the pronotal disk, ventro- 

 internal margin with two pronounced spines distad; cephalic tibiae slightly 

 surpassing the femora in length, tympani of inflated proximal section apert on 

 both faces, slender thence, with the apex slightly enlarged: median femora 

 slender, in length nearly twice that of the cephalic femora, ventro-cephalic 

 margin with one or two distinct distal spines; median tibiae slightly longer 

 than the median femora, tapering distad from a relatively thickened proximal 

 section, extremity faintly enlarged. Caudal femora one and five-eighths times 

 as long as the tegmina, considerably inflated proximad and compressed, very 

 slender in distal half, with genicular extremity somewhat enlarged; jiattern 

 of pagina of inflated portion evidenced by slightly irregular, simple, ()l)lique 

 and subimbricate lines; ventral margins with several sul)obsolete spines vari- 

 ably indicated distad: caudal tibiae slightly surpassing the femora in length. 



Allotype. — cf ; Chanchamayo, Peru. Elevation, 1000 meters. 

 1906. [Acad. Nat. Sci. Phila.] 



DifTering from the above description of the female in the following features. 

 Pronotum with greatest caudal width of disk contained one and one-half times 

 in the greatest length of the same, the lateral margins less diverging caudad 

 than in the female, a weak transverse impression at caudal two-fifths of the 



TRANS. AM. ENT. SOC, XLIV. 



