358 EUMENIDJE. 



sides of the thorax, and on the ahdomen ; wings deep fuscous, 

 with a purple effulgence broadly along the costal margin of the 

 fore wing, the rest fusco-hyaline. 



c? similar, the base of the clypeus yellow. 



Hah. Barrackpore, Bengal ; Burma. $ . Length 13-14 ; exp. 

 27-29 mm. 6". Length 13 ; exp. 27 mm. 



632. Rhjrnchium metallicum. 



Kygchium metallicum, Sauss. Mon. Guej). Sol. p. 114, 5 <S • 

 Rhyncliium metallicum, Smith, Cat. v, p. 45. 



2 . Head and thorax coarsely and closely punctured ; abdomen 



satiny, smooth, and with sparse, fine shallow punctures ; clypeus 



broadly pyriform, the apex truncate 

 and slightly emarginate ; scutelluin 

 and postscutellum slightly sloped, not 

 oblique, the latter not gibbous ; 

 median segment short, concavely 

 truncate posteriorly, the sides not 

 produced, rounded. Black, covered 

 ^^ with more or less of a thin silvery 



MmcAiummetallicmn,^. #. P^l^, especially on tlie clypeus, the 



front, cheeks, sides or the thorax, the 



median segment, the legs, and the sides of the abdomen ; wings 



fusco-hyaline, broadly dark fuscous with purphsh effulgence along 



the costal margin of the fore wing. 



J similar, but with two oblique yellow spots sometimes joining 



and forming a baud along the base of the clypeus. 



Bah. Barrackpore ; Eangit Yalley, Sikhim ; Calcutta ; Madras ; 



Pegu Hills, Burma ; Tenasserim. $ . Length 12-13 ; exp. 25- 



26 mm. d . Length 10-11 ; ex2). 25 mm. 



633. Rlipicliiiim argentatum *. 



Yespa argeutata, Fabr. Si/st. Fiez. p. 260. 



Rygchium argentatum, Sauss. lylon. Guep. Sol. p. 115, $ J. 



Rhynchium argentatum, Smith, Cut. v, p. 45. 



5 (S . Closely allied to and resembling H. metallicum^ but con- 

 stantly larger, the median segment slightly more rounded poste- 

 riorly, the silvery pile entirely absent, and the wings dark fuscous 

 with a purple effulgence, not fusco-hyahne on the posterior half. 

 In the d the entire clypeus and the scape in front is yellow. 



Bab. Sikhim ; Malabar ; Shevaroy Hills, Madras. § . Length 

 14-15 ; exj}. 28-32 mm. d slightly smaller. 



* The following species is described by Saussure from " Tranquebar " bnt 

 has not, so fai* as 1 know, been procured of late years, and it may not be 

 Indian : — 



R. CAKBONAiiiuM, Savss. Ami. Soc. Eni. Fr. 1857, p. 317. 



"Sat parvum, nigrum, depressum, ubique dense punctatum, clypeo truncato, 

 postscutello hand crenato, metanoto valde bispinoso, supra caiithis nullis, 

 abdomen conicum, basi valde truncatum, sutura, indistiucta, ala; nigro-violacese. 



"Longueur totale I'd mm., aile 10 mm." 



