94 Annals of the Carnegie Museum. 



General color dark olive-green, the disk of pronotum bordered on 

 cither side by a moderately prominent, but not wide, piceous band, 

 which reaches from the anterior to posterior margins. Legs greenish 

 olive, the inner side and lower sulcus of hind femora flavous, the 

 genicular region somewhat tinged with ferruginous; hind tibiae and 

 tarsi coral-red. 



Length of body, 9 , 28.5 mm., of pronotum, 4.5 mm., of tegmina, 

 approximately 12 mm., of hind femora, 13 mm. 



Habitat. — Corumba, Brazil, April. The type is in the Carnegie 

 Museum. 



Genus Zosperamerus Bruner. 

 Zosperamerus Bruner, Biol. Cent. Amer. Orthopt., II, pp. 214, 274 (1907-8). 



This is a genus composed of medium-sized tropica! locusts, which, 

 so far as at present known, are confined to Central America and the 

 northern parts of South America. These insects are characterized 

 by their excessively long and slender hind tarsi, the colored base 

 and infuscated apical half of the wings and by the very slender filiform 

 antennae. Three species have been described in the past and a fourth 

 is now added. These four species may be separated by the following 



key: 



Synopsis of the Species of Zosperamerus. 



A. Size smaller (9 , 22 mm., d" > 17 mm.). General color greenish olive to dark 

 brunneo-cinereous, varied with bands and mottlings of dirty white or 

 testaceous. 

 b. The femora of all the legs conspicuously banded with pallid and fuscous. 



[Nicaragua, Central America.] zonatipes Bruner. 



bb. Femora less conspicuously banded. 



c. Face, cheeks, lateral lobes of pronotum, pleura, and hind femora con- 

 spicuously marked with dirty white patches. [Peru, S. America.] 



albopictus Bruner. 

 cc. Face, cheeks, lateral lobes of pronotum, pleura, and hind femora very 

 obscurely marked with testaceous. [Para, Brazil.] 



brasiliensis sp. nov. 



AA. Size larger ( $ , (?)., o 71 , 27 mm.). General color luteous, varied with red and 



black. [Para, Brazil.] marginalis Walker. 



134. Zosperamerus brasiliensis sp. nov. 

 x\s indicated by the above synoptic table the present species is 

 rather closely related to both zonatipes and albopictus. From the 

 former it differs by the less conspicuously banded femora and from 

 the latter by its more obscure and even color. 



