JAMES A. G. REHN 279 



not feel warranted in making any more definite deductions, as 

 variation may cover the apparent differences. This Upper Ama- 

 zon type is clearly Sciidder's Zonocerus ? hilineatus, described 

 from the eastern slope of the Peruvian Andes. "*- Bruner has 

 renamed this form peruna,*^ as hiliyieatus is preoccupied in the 

 genus. In the original description Scudder rather curiously 

 transposed the measurements of the antennae and the caudal 

 tibiae. 



Compsacris pulcher Bolivar 



1890. Compsacris pulcher Bolivar, Anales Soc. Espan. Hist. Nat., xix, p. 



315. [Villa Bella, Peru.«] 

 1911. Siaurorhectus intermedius Bruner, Ann. Carneg. Mus., viii, p. 31. 



[Para, Santarem and Chapadd, Brazil.] 



Manaos, Amazonas. (Mann and Baker.) Two females. 



These specimens are inseparable from a female from eastern 

 Peru, all of which fully agree with the original description of this 

 striking insect. Our specimens, however, have the tegmina and 

 caudal femora slightly longer than the original measurements of 

 the same sex. 



This genus combines features of the Orphulellae and the group 

 of genera represented by Staurorhedus and Amblytropidia, show- 

 ing particular affinity to Staurorhectus. The general form of the 

 female sex and to a lesser degree that of the fastigium, the frontal 

 costa and of the lateral lobes of the pronotum of both sexes sug- 

 gests the Orphulellae, while the general proportions of the prono- 

 tal disk and the form of the limbs are much as in Staurorhectus, 

 the ovipositor jaws being similar to those of Staurorhectus glau- 

 cipes. The genus Compsacris also includes Staurorhectus brevi- 

 pennis Rehn,^-^ from Corumba, Brazil, the female of which we 

 have not seen, but which appears to differ, on the basis of oppo- 

 site sexes, in the more rounded fastigium, when seen from the 

 side, and in the absence of pale antennal tips. 



When compared with Staurorhectus longicornis, the genotype 

 of Staurorhectus, the female sex of Compsacris differs in the much 



«Proc. Boston Soc. Nat. Hist., xvii, p. 268, (1874). 

 " Ann. Carneg. Mus., viii, p. 16, (1911). 



''■'Villa Bella, Bolivia at the junction of the Beni and Mamor6 Rivers ia 

 probably the locality. 



« Proc. U. S. Nat. Mus., xxx, p. 377, (1906). 



TRANS. AM. EXT. SOC, XLII. 

 5 



