\i i: : South A mern \\ I i.v> 



to the base of the mandibles, gently arcuate and divergent. Antenna 

 missing, the basal joinl large, nearlj as broad as the ertex, possibl) 

 filiform. Pronotum gently selliform, the two lobes aboul equal in 



h, the anterior one rounded above and without traces ol i 

 carina, the posterior one depressed and with well-defined shoulders 

 but nol carinate a1 sides, hind margin rectangulate, median carina 

 visible throughout, severed by the last transverse sulcus. Tegmina 

 narrow, somewhat coriaceous, and closely nerved on the dorsal field 

 of the basal half, beyond less closel} veined and somewhal mem- 

 branous, without intercalary vein. Abdomen carinate above, evenly 

 tapering, the apex bluntly acuminate, cerci and supra-anal plate 

 simple. Hind femora fairly large and robusl basally, --lender beyond, 

 genicular lobes rounded at apex; tibiae 7-spined externally; inner 

 spurs very unequal in size, reminding one of the genera Stirapleura 

 and Scyllina. Interspace between the mesosternal lobes nearly twice 

 as wide as long and somewhat greater than the width of the lobes 

 themseh es. 



General color as mentioned above, the front, legs, including the hind 



u-moia, and lower side, pale brunneo-testaceous, the abdomen a little 



paler with a series of obscure triangular dorsal maculations, one on the 



base of each of segments 1-7: base of hind tibiae and interior lower 



1 >f fem< iral genae a lit t le obscured. 



Length of body, cf, 15 mm., of pronotum, 3.1 mm., of tegmina, 

 14 mm., of hind femora, 10 mm. 



ntat. — Rio Machupo, near Rio Guapore, Bolivia, Aug. 29 

 (Haseman collector). The only specimen at hand, the type ol both 

 the genu- and species, is deposited in the Carnegie Museum. 



This insect on account of it> coarsely pitted front, pronotum, and 

 pleura seems to fall near Ligurotettix Bruner. 



< ienus Si irapi eura Scudder. 



Stirapleura Scudder in Wheeler, Ann. Rept. t". S. Geol. ami Geogr. Surv. Merid., 



Append. JJ., p. -'<j'>, I 1 8 



50. Stirapleura bruneri Rehn. 



Stirapleura bruneri Rehn, Proc. Acad. Nat. Sci. Phil., 1906, p. \<>. 

 Stirapleura signatipennis Bruner (nei Blan cond Kept. Locust Comm. 



B. Aire-, pp. 34, 36, fig. u i 1900). 



itat. — There are at hand five specimens, one male and four 



