184 



A species of less than medium size, with the wing- covers narrow and 

 of almost equal width throughout, the posterior femora unarmed beneath, 

 and the ovipositor short and narrow. 



Cone of the vertex prominent, narrow, rounded at the apex ; the sides 

 of the frontal deflexed portion rapidly converging to form a very acute 

 wedge. Wing-covers long, slender, not narrowed in the middle as in 0. 

 vulgare, glaberrimum, etc., tapering slightly on the apical third to a rounded 

 end ; their length equalling that of the wings in the male, a little shorter 

 in the female. Posterior femora with the basal half quite stout, the length 

 less than that of the tegmina. Cerci of male slender, cylindrical, some- 

 what pointed, the apical half curved slightly outwards, the basal tooth 

 short and weak. Ovipositor short, narrow, moderately upcurved, and 

 tapering to a delicate point. 



Color. — Tegmina and wings almost uniform transparent olivaceous brown. 

 The usual dark reddish-brown band upon the occiput and disk of pro- 

 notum is margined on the latter with two very narrow and darker brown 

 stripes, which extend back to the middle of the posterior lobe of the 

 pronotum. Face, and usually the hind femora, a dirty olive brown ; the 

 latter, when dry, with a blackish longitudinal band on the exterior face. 

 In the female the only green on the body is on the* lower part of the sides 

 of the pronotum and on the anterior femora. The only male at hand has 

 the posterior femora green, but otherwise is colored like the females. 

 Ovipositor light reddish-brown. 



Measurements. — Length of body, male, 17.5 mm.; female, 19 mm.; of 

 pronotum, male, 4.5 mm.; female, 5 mm.; of tegmina, male, 20.5 mm.; 

 female, 24.5 mm.; of antenna-, male, 40 mm.; of posterior femora, male, 17 

 mm.; female, 17.5 mm.; of ovipositor, 7 mm. 



This dull colored grasshopper has been found in small numbers in both 

 Yigo and Fulton counties, in upland prairie meadows, where it frequents 

 the tall grasses, usually in company with Xiphidium stridum, Scudder. 



It is a smaller and more slender bodied insect than the common 0. 

 vulgare, Harris, and has a shorter and narrower pronotum and a much 

 smaller ovipositor than that species. 



"■. Apical half of posterior femora armed beneath with several small 

 spines. 

 /'. All the tibia- and tarsi black or dark brown. 



