EYPOLTCJENINM 151 



SECTION III. 

 Forewing with four sub-costal nervules. 



Genus DACALANA. 



Dacalana, Moore, Journ. As. Soc. Bengal, 1884, p. 36. Distant, Rhop. Malayana, p. 240 (1884). 

 de Mceville, Butt, of India, iii. p. 335 (1890). 



Eyes naked. Forewing with vein 12 terminating on the costa opposite the end of 

 the cell ; four sub-costal nervules ; middle discocellular nervule arising from the upper 

 discoidal a little beyond its origin, lower discocellular upright, in a straight line with 

 the upper, and about twice as long, vein 3 from just before lower end of cell, 2 arising 

 near to it ; wing somewhat triangular, outer margin oblique ; a tuft of hairs covering 

 a small glandular spot in the sub-median interspace, and on the underside there is also 

 a tuft of hairs on the middle of the hinder margin. Hindwing, vein 7 slightly arched, 

 reaching the apex, upper discocellular straight, slightly outwardly oblique, lower also 

 straight, outwardly oblique, even less so than the upper, but a little longer ; 

 vein 3 arising immediately before lower end of cell ; sub-median nervure straight, 

 internal nervure recurved, with two filamentous tails from the ends of veins 1 and 2, 

 and a glandular sub-costal spot. Antennae half as long as costa of forewing, with a 

 long gradually formed slender club ; palpi rather long, porrect. 



Type, Amblypodia vidura, Horsfield. 



DACALANA BURMANA. 

 Plate 732, figs. 2, ^, 2a, ? , 2b, <J . 



Dacalana hurmana, Moore, Journ. As. Soc. Bengal, 1884, p. 36. de Niceville, Butt, of India, iii. 



p. 335 (1890). 

 Dacalana vidura, Elwes (nee Horsfield), Proc. Zool. Soc. 1892, p. 636. 



Imago. — Male and Female. Upperside azure-blue, paler than the colour of 

 Arrhenothrix penicilligera, otherwise the general appearance of both wings and the 

 sexual marks of the male are exactly the same, as is the case also with the type 

 species vidura, Horsfield ; on the underside the only difi'erence we can perceive is, as 

 stated by Moore when describing this form, that the transverse white band is somewhat 

 broader in both sexes, and the transverse diseal series, which is rather closer to the 

 margin than is usual, is composed of short well curved lines in the interspaces (in 

 vidura and penicilligera they are much more linear) and the outward curve of this 

 diseal series in the hindwing is much greater, coming much closer to the outer margin 



