318 HEMIPTERA. 



II. Metasternum unarmed. 



A, Abdomen with a strong basal spine. 



a. Posterior thighs very long and 



thick 17. ONCOMERIS. 



b. Posterior thighs slender 18. LYRAMORPHA. 



B. Abdomen unarmed. 



a. Posterior thighs much thickened. 



1. Antennae of four joints 11. EUROSTUS. 



2. Antennae of five joints 19. ONCOSCELIS, 



b. Posterior thighs scarcely, if at 

 all, thicker than the rest. 



1. Scutellum terminating in a 

 small, distinct, somewhat square 

 point. 



a. Thighs armed with one ortwo 

 spines beneath near the apex. 



* Sides of the thorax and ab- 

 domen angularly dilated. . 14. DALCANTHA. 



t Sides of the thorax and ab- 

 domen rounded 13. PYCANUM. 



b. Thighs unarmed. 



* Head bifid anteriorly; sides 

 of the thorax angularly di- 

 lated 15. EURYPLEURA. 



t Head entire ; sides of the 

 thorax rounded 16. CYCLOGASTER. 



2. Scutellum broad and rounded 

 at the apex. 



a. Antennae of four joints .... 20. CYCLOPELTA. 



b. Antennae of five joints .... 21. ASPONGOPUS. 



Genus 1. PEROMATUS. 



Edessa, p., Burm. Handb. ii. (1835). 

 Peromatus, Am. fy Serv. Hem. 156 (1843). 



1. PEROMATUS notatus. 



Edessa notata, Burm. Handb. ii. 354. 1 (1835) ; H. ScJiaff. Wan 



iv. 17. t. 115. fig. 363 (1839) & vii. 126 (1844). 

 Peromatus notatus, Am. fy Serv. Hem. 156. 1 (1843). 



a. Brazil. 



b. Brazil. Presented by Francis Walker, Esq. 



c. S. America. Presented by M. Audinet Serville. 



2. PEROMATUS validus, n. s. 



P. praecedenti affinis ; capite, thorace, scutelloque virid 

 thorace spinis obtusis nigris ; elytris castaneis, fulvo-nervosis, 



