LOXURIN^. 213 



sexual characters in the male, in Yasoda there is an elongated glandular patch of 

 scales on the upperside of the hindwing on vein 2. 



We describe here also the genus Sithon, Hiibner, which is quite differently 

 coloured, being dark purple-blue above in the male and brown in the female, has a long 

 filamentous tail and a long tail-like anal lobe, has two sub-costal nervules to the 

 fore wing, and has a tuft of hairs on the underside of the hinder margin near the base 

 of the forewing ; it really does not belong to this sub-family, it is a highly aberrant 

 genus, and has no place in any sub-family belonging to the Indian region. 



Genus LOXURA. 



Loxura, Horsfield, Cat. Lep. E.I.C. p. 119 (1829). Moore, Lep. Ceylon, i. p. 110 (1881). Distant, 

 Rhop. Malayana, p. 280 (1883). de Niceville, Butt, of India, iii. p. 434 (1890). 



Eyes naked. Forewing, vein 12 ends on costa opposite end of cell, 11 emitted 

 a little before the middle of the cell, 10 at one-third before the end, 9 from middle 

 of 7, discocellulars slightly inwardly oblique, concave, of nearly equal length, cell 

 broad, vein 6 from near upper end of discocellulars, 5 from the middle, 3 from one-fifth 

 before lower end of cell, 2 from one third before the end, the two lying somewhat close 

 together, leaving a wide sub-median interspace, costa rounded, apex acute, outer 

 margin nearly straight, hinder margin long, also nearly straight. Hindwing, vein 

 8 arched at its base, curved thence to the apex of the wing, 7 emitted at one-third 

 before upper end of the cell, discocellulars outwardly oblique, slightly concave, of 

 equal length, cell broad, vein .3 emitted a little before the lower end of the cell, 

 2 from the middle, costa arched, apex rounded, outer margin curving inwards, the 

 wing produced hindwards into a broad lengthened tail, traversed for more than half 

 its length by vein 2 ; anal lobe small, abdominal margin shallowly excavated above it ; 

 in the female the winos are broader than in the male, and the costa of the forewing 

 is much more arched. Antennae short, less than half the length of the costa, 

 thickened throughout its length, but with no formed club ; the male has no secondary 

 sexual characters. 



Type, Papilio atymnus, Cramer. 



LOXURA ATYMNUS. 

 Plate 744, figs. 1, (^ , la, 9 > lb, $ , Ic, larva and pupa. 



Papilio atymnus, Cramer, Pap. Exot. iv. p. 82, pi. 331, figs. D, E (1780). Fabricius, Mant. Ins. ii. 



p. 70 (1787). Donovan, Ins. China, p. 70, pi. 39, fig. 1 (1798). 

 Henperia atymnus, Fabricius, Ent. Syst. iii. (1), p. 283 (1793). 

 Marmessus atymnus, Hiibner, Verz. bek. Schmett. p. 81 (1816). 

 Myrina atymnus, Godart, Enc. Meth. ix. p. 594 (1823). Horsfield, Cat. Lep. E.I.C. pi. 2, figs. 6, Ga, 



imago; 6b-e, structure of imago (1829). Druce, Proc. Zool. Soo. 1873, p. 353. 



