1900.] IN THE HOPE COLLECTION AT OXFORD. 813 



placed this species as a synonym of N. viridula Linn. From that 

 species N. chlorocephala differs by its elongate form, and particu- 

 larly by its more elongate and narrower head. 



Westwood localized it as " Brasilia ? " The British Museum 

 possesses specimens from Nyasaland collected by Mr. A. Whyte. 



Nezara chloris. 



Pentatoma chloris Westw. in Hope Cat. i. p. 38 (1837). 



Pentatoma mentiens Walk. Cat. Het. ii. p. 296. n. 92 (1867). 



Stal (En. Hem. ii. p. 41, 1872) places this species as a 

 synonym of Nezara viridula Linn. In this case, however, he has 

 fallen into error. N. chloris is a smaller 1 , more elongate, narrower, 

 and much more convex species ; the head is large and broad. 



I possess specimens both from Congo and Nyasaland. 



Nezara capicola. 



Pentatoma capicola Westw. in Hope Cat. i. p. 39 (1837). 



Pentatoma lata Westw. loc. cit. 



Pentatoma frontalis Westw. loc. cit. p. 37. 



Rhaphigaster capicola Ball. List Hem. i. p. 276. n. 5 (1851). 



Nezara capicola Stal, Hem. Afr. i. p. 195. n. 3 (1864). 



Pentatoma africana Westw. in Hope Cat. i. p. 39 (1837). 



P. frontalis and P. africana are colour varieties. In the strict 

 usage of the laws of priority, frontalis is the earliest name ; but as 

 this is clearly a variety or " sport," I do not disturb the arrange- 

 ment of Ballas and Stal. 



Nezara vibidtjla. 



Cimex viridulus Linn. Syst. Nat. ed. 10, i. p. 444. n. 28 (1758). 



Pentatoma oblonga Westw. in Hope Cat. i. p. 37 (1837). 



Pentatoma unicolor Westw. loc. cit. p. 38. 



Pentatoma berylina Westw. loc. cit. 



Pentatoma subsericea Westw. loc. cit. 



Pentatoma leii Westw. loc. cit. 



Pentatoma tripunctifera Westw. loc. cit. 



Pentatoma proxima Westw. loc. cit. 



Pentatoma chinensis Westw. loc. cit. 



Rhaphigaster subsericeus Ball. List Hem. i. p. 275. n. 3 (1851). 



Nezara viridula Stal (part.), En. Hem. ii. p. 41. n. 6 (1872). 



^Etius, gen. nov. 



Body moderately short, broad, and convex. Head long, almost 

 as long as the pronotum, lateral margins strongly sinuate, lateral 

 lobes a little longer than the central lobe and cleft at apices ; 

 antenna: four-jointed, basal joint not quite reaching apex of head, 

 second joint very long, third and fourth joints subequal in length ; 

 ocelli placed somewhat near the eyes ; rostrum reaching the 

 posterior coxae, second joint longest. Pronotum broad, the 

 lateral angles produced in long robust spines directed forward 



