Bruner: South American Acridoidea. 49 



(/. Pronotum short, the crest low, and but little produced posteriorly, 

 Hind tibiae with nine spines in the outei row. 



modi i i-Tos. 



dd. Pronotum longer, considerably produced posteriorly. Hind tibiae 



with t * • 1 1 spines in the outer row conspersus Bruner. 



/>/>. Tegmina and body uniformly colored, without maculations or conspersing. 



regmina, .1- well as entire body and legs, green. .. jhs/\'m/.v C.iglio-Tos. 



cc. Tegmina, body, and legs uniformly dull brown, save a palei dorsal stripe 



on the former affmis Brunei. 



.1.1. Crest of the pronotum smooth posteriorly. Genicular angles oi the hind 

 femora shorter and more rounded. 

 b. Hind tibia* provided with fewer (ten) spines in outer row. 



c. General form somewhat graceful; markings of tegmina very regular. 



(rest of the pronotum evenly arched regularis Bruner. 



cc. General form rather robust; markings of tegmina somewhat irregular. 



Crest of pronotum less evenly arched guarani Rehn. 



bb. Hind tibia- provided with more (eleven to nineteen) spines in outer row. 

 Color variable. 

 c. Color in part, or largely, green; the discal area of tegmina with, or with- 

 out, dark spots. 

 d. Posterior femora punctate, and with all the carina? nigro-serrate. 

 Hind tibiae armed with eleven or twelve spines on the outer 



margin. [San Leopold, Central Brazil.] scabripes Stal. 



dd. Posterior femora nearly smooth, only partially nigro-punctate on 



the carina?. Hind tibiae armed with thirteen to sixteen spines 



on outer row. 



e. Larger and more robust (male 36, female 51 mm.); the disk of the 



tegmina provided with a row of prominent dark subquad- 



rate spots. Hind femora rather robust basally. Hind 



tibiae thirteen or fourteen-spined Icevipes Stal. 



ee. Smaller and slenderer (male 33, female 40 mm.); disk of tegmina 

 immaculate, or only showing traces of the discal spots. 

 /. General color ochraceous, varied with chestnut and cinnamon- 

 brown. Outer row of spines on hind tibiae numbering 

 thirteen to fifteen. [Chapada, Brazil.] 



atlenuatus Rehn. 



ff. General color at least of pronotum and tegmina largely green. 



Outer row of spines on hind tibiae numbering fifteen 



to sixteen. [Sao Paulo, Brazil.] gracilis Brunei. 



Color ochreous or ferrugineo-testaceous. 

 d. Hind tibiae with ten to twelve spines in outer row-, crest of pronotum 



arcuate. Tegmina with a pale costal line lineatus Bruner. 



dd. Hind tibiae with eighteen to nineteen spines in outer row, crest of 

 pronotum straight. Tegmina without a costal line. 



laufferi Bolivar. 



