Bruner : South American Locusts. 17.". 



species given on pages 57— 5s of Vol. YIII, of the Annals under cc. 

 with j mi corn in, from which h differs in wing-color, etc. 



Not having seen specimens of the genus Clarazella Pictet and 

 Saussure, which seems to be rather closely related to Zoniopoda, the 

 writer hesitates to place any of the several green species thus far 

 called Zoniopoda under the former genus. The species described 

 above, however, is very much too large for the Clarazella patagona 

 of Pictet and Saussure. 



Genus Prionacris Stal. 



Prionacris Stal, Bihang. till K. Svensk. Vet-Akad. Handl., V, No. 4, pp. 19, 55 

 (1878); Bruner, Ann. Carnegie Mus.. VIII, p. 62 (1911). 



The genus Prionacris Stal belongs to tropical South America. Its 

 representatives are most common in southern Brazil, Paraguay, and 

 eastern Bolivia. Thus far three species have been described, and 

 now a fourth is added. These forms may readily be separated by the 

 subjoined synoptical key: 



Synopsis of the Species of Prionacris. 

 .4. Disk of wings tinged with rosaceous; general color of insect yellowish olive 



[New Grenada and other S. American regions] compressa Stal, 



.4.4. Disk of wings not tinged with rosaceous; general color somewhat variable, 

 usually dark olive or brownish. 

 b. Pronotum bordered with a series of black maculations; the disk above also 

 more or less strongly maculate with fuscous. Hind wings tinged 



with flavous [S. E. Bolivia] atromaculata sp. nov. 



bb. Pronotum not bordered with dark maculations, the disk likewise im- 

 maculate. Hind wings tinged with either blue or green. 

 c. Wings tinged with cerulean [Upper Amazons] .... carulescens Bolivar. 

 cc. Wings tinged with green [Paraguay and southern Brazil], .erosa Rehn 



80. Prionacris atromaculata sp. nov. 



Similar to the other species in general form, but differing from all 

 of them in its yellow-disked, shorter wings, and by having its pronotum 

 strongly bordered with black maculations. Body rather closely 

 hirsute. 



Head large and bulldog-like, reminding a person strongly of the 



representatives of the genus Rhicnoderma, its width decidedly greater 



than the anterior edge of the pronotum, rather closely and strongly 



punctulate, except on the occiput and upper portion of the cheeks. 



prominent in both sexes, plainly longer than wide, separated 



