Bruner: South American Acs \. 33 



tudinally fasciate with flavous; front, lower portion oi cheeks, lower 

 half of pleura, and underside of body, flavous tinged with green (cT) 

 or pale testaceous tinged with olive (9 )• Hind femora chiefly 01 

 red with the apex black, preceded l»\ a prominenl pale annulus; upper 

 edge of femora more or less conspersed \\ ii li fuscous, and in the females 

 tinged with cinereous along the upper half ol the outer disk; hind 

 tibiae strongly infuscated, except for a rather prominenl sub-basal 

 pale annulus. Antenna? infuscated, or black, with the immediate 

 apical joints pallid. 



Length of body, d\ 17.5 mm., 9 , 25 mm.; of pronotum, a 71 , 3 mm., 

 9 , 4.,v> mm.; of tegmina, c? , 12.5 mm., 9 , 17. 5 mm.; of hind femora, 

 ' . 1 3 mm., 9.17 mm. 



Habitat. — Three males and four females, Para, Brazil; one male, 

 Santarem, Brazil; and two females, Chapada, near Cuyaba, Matto 

 Grosso, Brazil. April to June (H. H. Smith). 



The types, cf and 9 , are deposited in the Carnegie Museum. 



In some of its characters the present species approaches the genus 

 Amblyscapheus Bruner, as indicated above; but the robust form and 

 presence of lateral pronotal carina', although much interrupted, place 

 it in Staurorhectus Giglio-Tos, along with longicornis Giglio-Tos and 

 brevipennis Rehn, both of which are before me, as I write. Three of 

 the females coming from Para have the dorsal field of the tegmina 

 testaceous, instead of green. 



Genus IsONYX Rehn. 

 Isonyx Rehn, Proc. Acad. Nat. Sci. Philad., 1906, p. 36. 



There is but a single species in the present genus which according 

 to its author is related to Borcllia Rehn as well as to Staurorhectus 

 I riglio-Tos. Possibly it is also allied to Stereotettix Rehn. 



41. Isonyx paraguayensis Rehn. 



Isonyx paraguayensis Rehn, Proc. Acad. Nat. Sci. Philad., 1906, pp. 36-39, figs. 

 11-13. 



Habitat. — Sapucay, Paraguay (Foster). This insect is not con- 

 tained in the H. H. Smith material now under examination, but as the 

 Chapada region has a fauna similar to that of Sapucay, Paraguay, it 

 evidently occurs in southern Brazil as well. In size it is the same 

 as Borellia carinata described by the same author. 



