100 Annals of the Carnegie Museum. 



punctulate, much more closely so on the posterior lobe, the sides 

 parallel; median carina prominent, profoundly severed by all three of 

 the transverse sulci, the intervening sections roundly lobate; both the 

 anterior and posterior margins obtusangulate. Pleura also quite 

 strongly and coarsely punctulate. Tegmina complete, fully as long 

 as the abdomen, the venation quite prominent; anterior margin 

 gently lobate on basal fourth. Hind femora slender, the superior carina 

 gently serrate; the tibiae normal, eight-spined externally. Valves of 

 the ovipositor slender, moderately curved. Interspace between the 

 mesosternal lobes narrow, more than twice as long as broad, the inner 

 edges of the lobes themselves evenly rounded. Prosternal spine fairly 

 prominent, the apical third compressed from the sides, its anterior 

 margin directed cephalad into a dull finger-like lobe. 



General color as described above. Wings orange-vermilion basally, 

 becoming smoky apically, the extreme apex slightly paler. Spines 

 on inner side of hind tibiae somewhat longer than those on outside, 

 their external edge infuscated to base, the inner basal portion pallid, 

 with the apex black. 



Length of body, 9 , 43 mm., of pronotum, 9 mm., of tegmina, 34 

 mm., of hind femora, 18.5 mm. 



Habitat. — The collection contains three female specimens of the 

 species, all of which were taken at Chapada, near Cuyaba, Matto 

 Grosso, Brazil, one of them in the month of July and the others 

 during August. The type is the property of the Carnegie Museum. 



Genus Aleuas Stal. 

 Alenas Stal, Bihang. Svensk. Akad. Handl., V, no. 4, pp. 25, 69 (1878). 



The several species comprising the present genus belong to southern 

 Brazil, Paraguay, Uruguay, and Argentina. At least five forms are 

 known, four of them having been previously described, while the fifth 

 is now added. They must be separated as follows: 



Synopsis of the Species of Aleuas. 

 A. Hind tibia: armed externally with six or seven spines. Wings either fully 

 developed or more or less abbreviated. Pronotum strongly rugoso- 

 punctate. 

 b. Tibiae normally with but six spines on the outer margin. 



c. Tegmina slightly surpassing the apices of the hind femora. 



vitticoliis Stal. 

 tc. Tegmina much abbreviated, less than half as long as the abdomen. 



brachypterus Bruner. 



