HERPA; CORMA; CHALCOSIA. By Di. K. Jobdan. U 



/'. rihiHcopia Dnn-ij. Brownish black, body somewliat blue; occiput red. Forewiiig with a slightly 

 curved dirty white band. Underside with metallic blue subniarginal spots, the hindwiiig, moreover, being 

 washed with blue towards base. — The Palaearctic form is atratus Bth: (2 c), ditfering from the Indian atratus. 

 (jldiicopis in the underside being less marked witli blue. Very common in .Japan, occurring also in Corea, 

 Manchuria, and West China. 



P. gemina M'alk. (2b). Black-brown; occiput red; sides of breast and underside of abdomen yellow gemina. 

 in cf. Forewing with a straight yellow band. — Only one specimen known from West China; more 

 common in South China and North India. 



P. euchromioides Walk. (= fasciata Fldr) (2c). Blue; occiput red. Forewing with pale yellow euchrom- 

 band; hindwing with large, irregular, yellow patch. — Corea and North China, apparently rare; Leech met ^oides. 

 with this insect, which reminds one of Chalcosia remota, near Gensan in July. 



P. leechi nom. nor. (fasciatus Leech) (2d). Black, with yellow median band extending across both leec/ii. 

 wings. — Omei-shan and Mupin, West-China, in May and June. 



10. Genus: Herpa Walk. 



Antenna pectinate in d^ and ?, the teeth being very long in cf. Crossveins of both wings very 

 deeply angulate, the upper corner of cell much more projecting than the lower corner. Yellow species, 

 without metallic gloss on the wings, collar not red. — India, China. 



II. vcnosa Walk. Yellow; veins of both wings black. In North India and West China. — The 

 Chinese specimens are paler than the Indian ones: sinica Oberth. (2d), from Ta-tsien-lu, West China. sinica. 



H. ochracea Leech (2d). Like the i)receding species, but the abdomen black. — Wa-shan, West odiracea. 

 China, in July, one cf in coll. Leech (now belonging to the British Museum). 



H. luteola Leech (2d). Only one ? known to us. Head black; tegula of mesothorax yellow; thorax luteola. 

 and abdomen bluish black, the latter yellow beneath. Wings dirty pale yellow, veins and margins black. — 

 Wa-shan, West China, in July. 



H. basiflava Oherth. (2d). Body black. Wings dirty grey-yellow, veins black; forewing with basiflava. 

 yellow basal patch which is bordered by a black band. — More frequent than the previous species; West 

 China, in July. 



11. Genus: Coruia Walk. 



Pectinations of antenna shorter than in Herpa Walk.; 3. subcostal of forewing proximal of 4.; upper 

 angle of cell projecting very far, the hinder angle acute, 2. and 3. radials stalked; upper cell-corner of 

 hindwing truncate, no further projecting than the acute lower angle. — Indo-Malayan and Chinese. 



C. laranda Druce (2 e). Body above brown - black , edge of collar and underside dirty yellow, laranda. 

 Wings brown-black, marked with dirty white; forewing with 2 spots proximally of centre, a lai'ger spot 

 proximally of apex of cell, an interrupted discal band and some submarginal dots; hindwing with dirty 

 white streak beliind cell. — West, Central and Southern China. 



12. Genus: Chalcosia lllm. 



Like Herpa; pectinations of cf- antenna shorter. Cross-veins of both wings likewise deeply angulate, 

 the upper corner of cell projecting, at least in forewing, but not so much as in Corma. All the larger 

 species have a red collar; the dark parts of the body and wings are more or less metallic. — Indo-Malayan, 

 extending northward to Japan and Corea. The insects occur in West China partly at considerable altitudes; 

 such forms extend most probably farther north in Western China than is at present known. Some species 

 are very variable individuallj^, the speciiic distinctness of many forms being doubtful. 



C. pectinicornis L. {= thallo L.: guerini Kirbi/) (2 e). Wings browii, partly green or blue, pectinicornis. 

 especially distally on the veins; forewing with two macular bands; hindwing with a short white band at 

 the apex of cell, or also the basal area as far as this band suffused with white, ab. auxo L. {= tiberina auxo. 

 Cram.) (2e) is a conspicuously different form in which the hindwing is yellowish white, bearing a sharply 

 defined blue-black marginal band traversed by blue veins. — China. 



C. suffusa Leech (2e). Forewing, especially distally on the veins, pale ferruginous red; a white band suffusa. 

 in centre, accompanied by black spots internally and externally ; an interrupted subapical row of white spots. 



