2/4 HEMIPTERA. 



Genus 29. RHAPHIGASTER. 



Cimex, p., Linn. S. N. (1767) ; Fab. Ent. Syst. iv. (1794) fy Syst. 



R. (1803); Burm. Handb. ii. (1835); Ramb. Faun. And. ii. 



(1841?). 



Edessa, p., Fab. Syst. R. (1803). 

 Pentatoma, p., Pal. Beauv. Ins. (1805) ; LeP. & Serv. Enc. Meth. 



x. (1825); Hahn, Wanz. ii. (1831). 

 Rhaphigaster, Lap. Hem. 59 (1832) ; H. Schdff. Norn. Ent. i.37 



& 57 (1835) # Wanz.iv.(lS39)-, Kolen.Mel. Ent.iv. 55 (1846). 

 Rhaphigaster et Nezara, Am. fy Serv. Hem. 145 & 143 (1843;. 



A. NEZARA, Am. fy Serv. 



Generally green insects, with either a very short basal spine, or 

 with a more or less distinct keel to the abdomen. 



a. Thorax and scutellum spotted with black ; membrane green ; 



wings violet. 



1 . RHAPHIGASTER guineensis. 



Edessa guineensis, Fab. S. R. 151. 27 (1803). 

 a. . Presented by Captain Friend. 



b. Thorax and scutellum not spotted with black ; membrane and 

 wings transparent. Posterior angles of the abdominal seg- 

 ments generally with a black dot. 



* Ventral spine very small, generally obtuse and nearly rudi- 

 mentary. 



a. Abdomen with a more or less distinct keel. (NEZARA, pr.) 



2. RHAPHIGASTER prasinus. 



(Typicus.) R. elongato-ovatus, laete viridis, punctatissimus ; 

 scutello basi maculis 3 minutis albidis, punctoque nigro utrin- 

 que in angulo basali ; membrana subvirescenti-hyalina, imma- 

 culata; carina ventrali laevi, flavescente; sterno flavescente, 

 Isevi ; pedibus viridibus, coxis flavescentibus ; rostro testaceo, 

 apice nigro ; antennis viridibus, articulo tertio secundo multo 

 longiori, apice, quarto basi excepto, quintoque ferrugineis. 



Long. lin. 7-8. 



Var. ft. (C. torquatus, Fab. ; P. flavicollis, Pal. B.) Capite 



thoraceque antice flavis. 

 Var. y. (C. viridulus, Linn. ; C. hemichloris, Germ.) Supra 



flavus, thorace maculis 3 anticis, scutello 3 basalibus, latera- 



