428 



768. CastalillS rOXUS, Godart (Polyommatus), JEncycl. Meth. ix, 

 1823, p. 659 : Horsfield (Lycjena), Cat. Lep. Mm. E. I. C. 1828, 

 p. 70, pi. 2, tigs. 4, 4, $, 46-4/", structure of imago ; Butler, 

 Trans. Linn. Hoc., Zool. (2) i, p. 547 ; JElwea 8f de N. J. A. S. B. 

 1886, p. 428; de N. Butt. Ind. Hi, 1890, p. 199. 

 Castalius roxana, de N. Jour. Bomb. N. H. Soc. x, 1897, p. 633. 



c? Upperside : black. Fore and hind wings : obliquely crossed 

 by a broad medial white band that extends from just above vein 5 

 on the fore to the dorsum of the hind wing ; on the fore wing it 

 is shortly produced outwards above vein 3, the apex of this 

 extension square. Underside: white suffused slightly with pale 

 yellow, with the following black markings : a comparatively 

 broad, even, straight band across the base of the hind wing which is 

 continued obliquely on to and across the fore wing to the middle 

 of the costa, there it is joined by a narrow edging on the costal 

 margin to an irregular, upper, discal, outwardly oblique, short 

 transverse bar which is broadest on the costa ; posteriorly in a 

 line with this bar is a small, transversely elongate, oval spot in 

 interspace 3 and below en echelon with the latter two larger 

 coalescent spots, one above the other, in interspaces 1 and 2 ; 

 terminal margin with an even transverse band, its inner edge 

 slightly crenulate, medially traversed by a series of minute linear 

 white spots. Hind wing : a transverse, discal, very irregular 

 band widely interrupted in the middle ; two coalescent spots 

 beyond transversely across interspaces 4 and 5, followed by a 

 subterminal, complete, curved series of distinct lunules that are 

 edged slenderly on the outer side with white, and a prominent 

 anticiliary white line. Cilia of both fore and hind wings brown ; 

 filamentous short tail to latter black tipped with white. Antennae, 

 head, thorax and abdomen black, the abdomen barred with white 

 on the sides ; beneath : the palpi, thorax and abdomen medially 

 white. $. Closely resembles the d but on the upperside the 

 medial, broad, oblique white band that crosses the wings is distinctly 

 broader and on the fore wing extends farther towards the costa 

 in a point, while on the hind wing there is in addition, in many 

 specimens, a subterminal complete transverse series of linear 

 white dots. On the underside the black markings are broader ; 

 on the fore wing the upper discal short oblique black bar is 

 produced to and coalesces with the black spot in interspace 3 ; on 

 the hind wing the discal transverse black band is very irregular 

 but nearly continuous by the junction of its upper portion with 

 the spots in interspaces 4 and 5 ; terminal markings on both wings 

 as in the <3 . Antennas, head, thorax and abdomen similar to 

 those of the d . 



Exp. d $ 30-34 mm. (1-19-1 -33"). 



Hob. Burma; Tenasserim ; the Andamans ; extending in the 

 Malayan Subregion as far as the Philippines. 



$ Var. roxana, de Niceville, from Upper Burma, seems to me 

 either a casual aberration of C. rows (only two or three specimens 



