Bruner : South American Tetrigid/E. 135 



Length of I)ody, cf, 7-5 mm., 9, mm.; of pronotuni, d^, 6 mm.. 9 

 8.5 mm.; of hind femora, cf, 4.65 mm., 9, 7 mm. 



Habitat. — Chapada, Brazil, a number of specimens of both sexes, col- 

 lected b>' It. H. Smith from .April to July. Carnegie Museum, Pittsburgh. 



Tettigidea arcuata sp. nov. 



A moderately robust insect, a little above the medium in size and with 

 the apex of the tectate pronotum just about reaching the tips of the hind 

 femora in the typical form. 



Median carina very prominent, evenly arcuate and accompanied by 

 two or three well-defined supplemental carina; on each side of the disk. 

 Body and legs granulose, the surface for the most part glabrous. The 

 se.xes not greatly differing in size. 



Head large, considerably higher than wide, deeply set into the front 

 edge of the pronotum; vertex very slightly advanced beyond the eyes, the 

 lateral carina? well-defined, a little coarse; the occiput or summit of the 

 head profoundly grooved and ridged; frontal costa very prominent, deeply 

 but narrowly sulcate, continued caudad above to a point midway between 

 the eyes; antenna? short and coarse, situated on a line with the lower edge 

 of the eyes, the latter of fair size but not prominent. Pronotum tectate 

 anteriorly, variable in length but usually reaching the tip of the hind 

 femora in both sexes, its anterior edge angulate and advanced upon the 

 occiput, where its apex terminates in a short but acuminate tooth that 

 nearly reaches the posterior limitation of the frontal costa; lateral carinse 

 in front interrupted by the first transverse sulcus but insensibly merging 

 with the outer one of the supplemental or discal series, which latter extend 

 to opposite the apex of the tegmina; the latter rather large, broadly 

 rounded below, carinated above, immaculate but with the lower margin 

 paler than the disk and upper area. Legs robust, especially the femora, the 

 hind pair of which are nearly two-fifths as broad in their widest place as 

 long, the pinnae of outer disk distinct and regular but not prominent. 

 Wings in the typical form considerably surpassing the apex of the pro- 

 notum, in the brachypterous form sometimes only half as long. 



General color above varying from pale brownish testaceous to fuscous 

 and in some specimens showing mottlings of light and dark tints on the 

 pronotum and hind femora. Lower side paler but not so apparent as 

 in the males of several other species, as for example siibaptera, chapadensis, 

 and pulchella. Tibiae and tarsi of anterior and middle legs usually con- 

 spicuously annulated with testaceous and fuscous. 



