280 BRAZILIAN ORTHOPTERA 



narrower, acute fastigium, the more retreating face with more 

 compressed frontal costa, the proportionately more abbreviate 

 pronotal metazona, the complete structural absence of prozonal 

 lateral carinae and in the distant instead of attingent or subattin- 

 gent metasternal lobes. Bruner's intermedins, at least as far as 

 the female sex is concerned, is clearly this species. The male sex 

 of Staurorhedus glaucipes closely resembles Cornpsacris, with no 

 trace of the lateral carinae, however, but the female sex, while 

 agreeing in the distant metasternal lobes, the form of the ovi- 

 positor jaws and that of the caudal genicular lobes, differs in the 

 form of the fastigium, the general type of the pronotum, which is 

 without any traces of lateral carinae, the general form of the teg- 

 mina and the more slender type of caudal femora. For the pres- 

 ent at least it seems advisable to permit glaucipes to remain in the 

 genus Staurorhedus, which, however, is closely related to Comp- 

 sacris through the medium of that species. 



The two Manaos females agree in having the lateral pronotal 

 carinae structurally obsolete on the elongate prozona, but in 

 coloration one has these marked briefly cephalad by diverging 

 pale lines, which are completely lost in the other specimen. 



The species is known to range over the Amazonian region 

 from eastern Peru and Bolivia (Villa Bella and Santa Cruz de la 

 Sierra) to Para and south to Chapada, Brazil. 

 Peruvia nigromarginata (Scudder) 

 1875. Machaerocera nigromarginata Scudder, Proc. Boston Soc. Nat. Hist., 



xvii, p. 268. [Eastern slopes of the Peruvian Andes.] 



1890. P[cruvia\ nigromarginata Scudder, Psyche, v, p. 439. (December, 

 1890.) 



1891. Toxopterus miniatus Bohvar, Anal. Soc. Espaii. Hist. Nat., xix, p. 

 314. (February 28, 1891. «) [Cumbase, Peru.] 



Porto Velho, Rio Madeira. (Mann and Baker.) One male. 

 We regret very much having to substitute generic and specific 

 names relatively little known for the rather familiar ones of 

 Toxopterus and T. miniatus, but this course is unavoidable. 

 We have before us, from the collection of the Museum of Com- 

 parative Zoology, the unique female type of Machaerocera ni- 

 gromarginata Scudder, for which the same author later erected 

 the genus Peruvia. This specimen is identical with Bolivar's 

 later genus and species. The specific name nigromarginata has 



^5 For exact date see sheet at end of volume. 



