Division Discogastraria. 



SAVIUS DIVERSICORNIS. 



Jlomœocerus diversicornis Hope. Cat. Hem. II, p. 22 (1842). 

 CORYZOPLATUS RHOMBOIDEUS var. 



Discogaster rJiomboideiis Burm. Handb. II, I, p. 315, 1 (1835). 



A spécimen from Botafago appears to be a pale variety of this 

 species, the green colouration being either faded or absent. 



Sub-fam. Alydinae. 



Division Alydaria. 



HYALYMENUS SINUATUS. 



Gimex sinuatus Fabr. Mant. Ins. II, p. 290, 110 (1787). 

 HYALYMENUS TARSATUS. 



Eyalymenus {Tivarhus) tarsatus Stal. Hem. Fabr. I. p. 62, 3 

 (1868). 

 ALYDUS PALLESCENS. 



Aly dus pâlies cens Stâl. Rio-Jan. Hem. I, p. 34, 1 (1860). 



Division Leptocorisaria. 

 PERUDA gen. nov. 



Head very short and broad, strongly deflected in front; the eyes 

 somewhat exserted, their outer margin paraliel to the outer margin 

 of the pronotum. Pronotum long, robust and bilobed, the anterior 

 lobe moderately convex, the posterior lobe deflexed at posterior 

 angles which are foveate and laminate. Scutellum gibbous at base and 

 armed with a robust spine at apex which is not erect.Body elongate, 

 hemelytra much shorter than abdomen; legs long and slender; 

 antennse long and slender. Rostrum short not extending much 

 beyond anterior coxae, basai joint incrassated, penultimate joint 

 longest. 



Peruda typica n. sp. 



Pale castaneous ; apical spine to scutellum pale bright ochraceous. 

 Hemelytra pale greyish hyaline. Anterior and intermediate tibiae 

 infuscated, the tarsi ochraceous (posterior tibiae mutilated). Apex of 

 the rostrum pitchy; the posterior coxse ochraceous. Antennae dark 

 castaneous, basai joint with the apex infuscated. 



Antennae with the basai joint somewhat thickened, shorter than 

 the second and third joints, the third joint longer than the second 

 (fourth mutilated). Head and posterior lobe of the pronotum pilose, 

 the last with the posterior angles obscurely ochraceous, scutellum 

 with the basai angles palely, pilose. 



Long. 18 millim. 



Hab. Rio Janeiro. 



