276 Zygaenidae from Sumatra, Ceram, and New Guinea 



extends from vein 8 to 2 with a small spot behind this vein, outer edge 

 deeply indented in cellule 5 and slightly so on veins 2 and 3. Distal 

 area and margin black to the anal angle. 



Underside of fore wing with proximal half glossy Nile-blue (xix), 

 bordered by a discal pale-yellow band edged with black on inside. 

 The discal band forms a large spot in the cell and narrows below this 

 to lower submedian. Distal area black with a subapical band of Nile- 

 blue from costa to tornus, outer edge slightly curved, inner edge with 

 a separated spot in upper angle of cell, a projection at vein 2 and at 

 the tornus. Hind wing as on upperside, but the costa and outer edge 

 of discal band narrowly bordered with glossy Nile-blue, projecting 

 slightly on the veins and merging into the basal blue at the anal area. 

 Discal band broader than above, its inner edge straight and but slightly 

 bordered with black. 



Antenna black, shaft scaled above with metallic bluish-green, basal 

 segment of same colour. Head black, vertex with metallic bluish- 

 green, frons metallic-green. Collar red,tegulae and patagia dark-green. 

 Abdomen dark metallic-green above, black ringed with fuscous below. 

 Legs bright metallic greenish-blue. 



? . Fore wing dark-green overlaying a ground colour of Vandyke- 

 brown. A pale-yellow discal band as in the $ , but broader and with 

 a small spot below the lower submedian. Hind wing with paler blue 

 in proximal area and broader yellow band. Discal band with inner 

 edge nearly straight, outer edge curved and only indented in cellule 5. 



Underside as in $ but with broader yellow bands and distal blue 

 areas. 



Length of fore wing : S 2 , 24 mm. 



Central Ceram : Manusela, 6,000 feet, October to December, one 3 , 

 five ? ? . 



10. Pidorus chalybeatus sp. nov. 



The first representative of this genus from New Guinea. 



S . Upperside of fore wing black crossed by a narrow and sharply 

 defined white band from costa at base of vein 11 to inner margin before 

 the tornus, passing through the end of cell and curved slightly outwards 

 between cell and submedian. Hind wing steely-blue, the shade of dark 

 Iyrian-blue (xxxiv). 



Underside with fuscous-black ground-colour. Fore wing with a 

 broader white band having a narrower central part as above, the 

 additional more thinly scaled area mostly in the cell and on the distal 



