Bruner: South American Acridoidea. '27 



(ink males are al hand, but these all agree in having traces of 

 fuscous dots on the tegmina, and in having these members decidedlj 

 more elongate than in the same sex of A. diistralis. There arc from 

 twelve to fourteen spines on the external margin of the hind tibiae. 



32. Amblytropidia minor sp. nov. 

 A small, but moderately robusl species, in which the apex of the 



hind femora and base of tibiae art' strongly infnscated. Tegmina 

 with the costal margin undulate, the apical one-fourth plainly nar- 

 rower than remainder, reminding one a little of these members in 

 some of the species of Stenobothrus, Chloealtis, etc. Hind tibia? twelve- 

 spined externally. 



Male.— Head rather large, very little wider than the anterior 

 portion of the pronotum. Eyes large and moderately prominent, 

 quite plainly more than twice the length of the anterior margin of 

 the cheeks; fastigium of the vertex well rounded, and provided with 

 strong anterodateral margins and a median longitudinal carina, the 

 latter becoming almost obliterated on the occiput; frontal costa 

 prominent, wide, and provided with strong lateral carina?, which gently 

 approach at the ocellus, broadly and quite profoundly sulcate, con- 

 tinuous to the clypeus and provided near the upper end with a rather 

 prominent median carina. Antenna? linear, their length about one- 

 fourth greater than the head and pronotum combined. Latter 

 with the sides and carina? parallel, the hind lobe decidedly shorter 

 than the front lobe, the surface of sides and disk of hind lobe closely, 

 and rather finely, punctulate, remainder subglabrous; anterior margin 

 a little rounded, the hind margin obtusangulate. Tegmina moder- 

 ately broad and with the costal field more strongly developed than 

 usual in the genus, reaching beyond the apex of the abdomen as far 

 as the tips of the hind femora, the intercalary region without defi- 

 nite vein. Hind femora robust on basal, slender on apical half, 

 extending about one-fourth their length beyond the tip of the abdomen. 

 Interspace between the mesosternal lobes nearly quadrate, i. e., about 

 as wide as long, the inner edges of the lobes but little rounded. 



General color pale brownish-testaceous, the face, sides of head, 

 pronotum and pleura in part dull brown. Basal portion of hind 

 tibiae and genicular area of hind femora both internally and externally 

 strongly infuscated. Tegmina somewhat infuscated apically and 

 faintly conspersed with scattered fuscous dots. 



