138 PIElilD-S. 



J $ . Fore wing : costa slightly arched, apex very broad and 

 greatly rounded ; terraen convex ; tornus obtuse ; dorsum straight, 

 only a little shorter than the costa ; cell long, more than half 

 length of wing ; veins 5 and 7 closely approximate at base, vein 6 

 from lower side of vein 7, upper and middle discocellulars there- 

 fore both absent, lower discocellular strongly concave ; apical 

 portion of median nervure between veins 3 and 4 bent upwards 

 at an obtuse angle ; veins 8 and 9 both absent, vein 10 from just 

 before apex of cell, vein 11 from middle of subcostal. Hind wing : 

 costa very slightly arched ; termen strongly arched ; dorsum 

 straight or slightly arched ; cell elongate, more than half length 

 of wing ; lower discocellular long, concave ; vein 7 from apical 

 third of subcostal ; vein 8 slightly curved at base, then straight. 

 extended very close along the costal margin ; precostal vein or 

 spur short, inclined inwards. Antennae slender, not quite half 

 the length of the fore wing ; club long, gradual, slightly flat- 

 tened ; palpi slender, third joint fusiform ; eyes naked ; body 

 slender. 



Only a single form of this genus is known, a delicate creature 

 of feeble flight that slowly flutters about the undergrowth and 

 brushwood in the localities where it occurs. In India, according 

 to the MS. notes left by the late Mr. de JS^iceville, it has acquired 

 the trivial name of the " wandering snowflake." 



570. Leptosia xiphia, Fabr. (Papilio) SZKC. Ins. ii, 3781, p. 43 ; Moore 

 (Nychitcma), Lep. Ceyl. i, 1881, p. 118, pi. 46, figs. 6, 6 a ; Distant, 

 Rhop. Malay. 1885, p. 288, pi. 20, tig. 8 ; Davidson, Bell, $ Aitken 

 (Nychitona), Jour. Bomb. N. H. Soc. x, 1897, p. 5(59 ; Moore, Lep. 

 Ind. vii, 1906, p. 20, pi. 559, figs. 1, la, 1 b, <$ $ . 

 Leptosia nicobarica, Moore, Lep. Ind. vii, 1906, p. 22. 



d . Upperside : white ; base of wings very slightly powdered with 

 minute black scales. Pore wing : costa speckled obscurely with 

 black ; apex black, the inner margin 

 of this inwardly angulate ; a very 

 large somewhat pear-shaped post- 

 discal spot also black. Hind wing 

 white, uniform ; in most specimens 

 an obscure, extremely slender, ter- 

 minal black line. Underside : white ; 

 costal margin and apex of fore wing 

 broadly, and the whole surface of 

 the hind wing irrorated with trans- 

 verse, very slender, greenish strigte 

 and minute dots ; these on the 

 Fig. 36. Leptosia xiphia. hind wing have a tendency to form 



subbasal, medial and discal obliquely 



transverse obscure bands ; fore wing : the postdiscal black spot 

 as on the upperside ; terminal margins of both fore and hind wings 

 with minute black, short, transverse slender lines at the apices of 

 the veins, that have a tendency to coalesce and form a terminal 



