THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTORY. 



[SEVENTH SERIES.] 



No. 8(). FEBRUARY 1905. 



XI. — Xew Species of Eastern TIeterocera in the National 

 Collection. Bj Colonel Charles Swinhoe, M.A., 

 F.L.S., &c. 



Family Chalcosiidae. 



Chalcosia electra, nov. 



c? . Frons wliite, sliaft of antennae metallic blue, pectina- 

 tions black ; head and thorax black, covered with metallic- 

 blue scales ; abdomen pale ochreous brown, with white 

 segmental thin bands : fore wings dark greenish black, with 

 a dark dull ochreous subapical band, like two oval spots 

 joined together, extending from close to costa beyond the 

 middle to near outer margin above the middle ; a white space 

 on the hinder margin, which in the type specimen is pure 

 white and in the other is white suffused with brown : hind 

 wings white, with a black apical border, broad at the apex 

 and narrowing down the outer margin ; in the Santabong 

 example with black streaks below the costa ; some metallic- 

 blue scales at the base of tlie fore wings in the type specimen, 

 on both wings in the other. Underside much as above, but 

 there is much blue scaling on the basal portion of the fore 

 wings and at the apex of both wings : body and legs white. 



Expanse of wings 1^ inch. 



1 (^ , Pewrisoen, Borneo [Shelford) (type). 



1 (J, Santabong, Borneo {Slielford). 



I know of no near ally. 

 Ann. d: Mag. N. Hist. Scr. 7. Vol. xv. 11^ 



