424 



766. Castalius rosimon, Fair. (Papilio) Syst. Ent. 1775, p. 523; 

 Hiibner, Verz. bek. Schmett. 18] 6, p. 70; Moore, Lep. Ceyl. \, 

 1881, p. 83, pi. 36, fip. 2; de N. Butt. Ind. Hi. 1890, p. 197 ; 

 Davidson, Bell fy Aitken, Jour. Bomb. N. H. Soc. x, 1890, 

 p. 379. 



3 . Upperside : white. Fore wing : costa, apex and termen 

 edged with black, the edging much broader on apex and termen ; 

 base outwards for a short distance more or less densely overlaid 

 with metallic blue scales which cover 

 and make indistinct a large basal out- 

 wardly clavate black spot ; a transverse 

 black oval spot on the discocellulars 

 touching the black edging on the costa ; 

 an oblique irregular line of four quadrate 

 black spots beyond, the upper spot co- 

 alescent with the black on the costal 

 Casialins rorimw. border, the next spot below shifted out- 



Wet-season brood. wards out of line, touching, as does also 



the lowest spot, the terminal black edging; 



posterior to this is a quadrate black spot in the apical half of 

 interspace 2, and placed obliquely outwards from it coalescent with 

 the terminal black border, another similar spot in interspace 1 . 

 Hind wing : three basal black somewhat coalescent spots overlaid 

 with metallic blue scaling ; the costal margin above the subcostal 

 vein and vein 7 black ; this colour filling also the base of inter- 

 space 6, where in some specimens it is divided into a basal portion 

 with a spot beyond ; a postdiscal curved transverse black band 

 followed by a subterminal transverse series of black spots, each 

 spot edged inwardly and outwardly by very slender lunules of the 

 white ground-colour ; on the inner side of the postdiscal band 

 posteriorly is a broken line of four black generally coalescent spots 

 two and two, the two upper often touching the postdiscal band. 

 Underside : white. Fore wing : a long oblique black band from base 

 outwards to the costa ; below it and obliquely placed an irregular 

 black somewhat conical mark ; following these are two outwardly 

 oblique, medially interrupted, black macular bands ; the inner of the 

 two extended from costa along the discocellulars, is then widely inter- 

 rupted below its posterior portion that is formed of two elongate 

 coalescent spots and touches the inner subterminal transverse line 

 of elongate spots just above the tornus ; the outer, obliquely placed 

 line is subapicaland medially broken, the middle portion consisting 

 of a quadrate spot is shifted outwards ; finally, two parallel sub- 

 terminal transverse series of black elongate spots, the inner series 

 of broad, more or less rectangular spots, the outer series of more 

 linear spots, the latter coalescent anteriorly with a slender anti- 

 ciliary black line. Hind wing : a transverse basal black band, 

 with an elongate black spot below it on the dorsum : a transverse 

 subbasal line of four well-separated black spots ; a transverse, oval, 

 discocellular black spot and obliquely above it three subcostal 

 similar spots, the inner two coalescent ; postdiscal and terminal 

 markings consist, the former of four black posterior spots two 



