Bruner : South Amerii \\ Acridojdea. Il'7 



17(1. Schistocerca pallens (Thunberg). 



Cryllus /><///<•»;> I'm m.i rg, M .in. Acad. Petersb., V, p. 237 < [815). 

 Acridium (Schistocerca) pollens Siai.. Recens. Orthopt., 1. p. <><> 1 

 Schistocerca pallens Brunner et Redtenbacker, Proc. Zool. Soc. Lond., 1892, 

 l>. 210. 



Habitat. A series of thirteen specimens of this hue locust are 

 Im-i, .re me. Tlir> bear the label "Chapada, Brazil," and were col 

 lected during the months of M.i> to July inclusive l>y II. II. Smith 



[77. Schistocerca formosa sp. nov. 



This insect, as the name would imply, is a remarkably beautiful 

 one in comparison with the various other species of the genus. In 

 color it is bright olive-green, testaceous, red, purplish brown and 

 white. It is also one of the largest representatives of the genus. 



Head large and high, a little wider than the front edge of the pro- 

 notum, mandibles, clypeus, and labrum unusually large; eyes large, 

 bin not especially prominent, in the male nearly elliptical, but in the 

 female with the front edge sub-straight; vertex rather broad, quite 

 as wide (c?) or nearly equal (c?) to the shortest diameter of the eyes, 

 the fastigium broad and coarse, quadrate, and shallowly sulcate; 

 frontal costa broad and prominent, of nearly equal width throughout, 

 bin. ully sulcate in the vicinity of the ocellus, coarsely punctate above. 

 Antenna' just reaching (9) or a very little surpassing (cf) the hind 

 border of the pronotum, the basal joint large. Pronotum long, 

 roundly tectate on anterior lobe, but more flattened behind; median 

 carina coarse and prominent throughout. The sides not especially 

 "pinched" so as to give the insect the strangulated appearance com- 

 mon to S. paranensis, pergrina, and exsul, surface profusely and 

 coarsely punctulate; transverse sulci coarse, but not deeply impressed, 

 the last >ituated a little behind the middle; hind margin broadly and 

 roundly angulate even in the male front margin broadly rounded. 

 Tegmina of medium width, extending beyond the tip of abdomen in 

 both sexes. Hind femora rather long and fairly heavy, nearly reaching 

 the apex of abdomen in both the male and female. Front and middle 

 femora only moderately robust in male. Last ventral segment of 

 male abdomen deeply and narrowly notched. Prosternal spine long, 

 coarse, and directed to the rear, its apex pointed and resting on the 

 front edge of the mesosternum. 



Head, pronotum, and pleura of meso- and meta-thorax pinkish 



