272 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. IX. 



white than on the forewing. Underside, both wings creamy-white, 

 all the markings deep black and prominent ; a series of sub- 

 marginal lunules, six on the forewing, seven on the hindwing ; 

 beyond which is a marginal series of six and seven black spots 

 respectively, those on the forewing oval, on the hindwing round. 

 Forewing with a line on the disco-cellular nervules ; a slightly irregu- 

 larly-curved discal series of six spots. Hindwing with four rather 

 large spots towards the base of the wing, the costal one the largest ; 

 a fine line on the disco-cellular nervules ; a very large round spot on 

 the middle of the costa ; the usual irregular discal series of spots. 

 Female. Upperside, both wings deep black. Forewing with a large 

 round pure white patch in the middle of the wing, in certain lights 

 glossed with beautiful pale metallic blue, especially so at its outer edge ; 

 the base of the wing from the middle of the discoidal cell to the 

 inner margin, and extending along the inner margin to near the outer 

 angle, rich light metallic blue. Hindwing with the costa narrowly 

 white ; a large oval pure white patch in the middle of the wing ; the 

 abdominal margin white ; the base of the wing glossed with rich 

 light metallic blue. Underside, both wings precisely as in the 

 male. 



Near to C. marginata, de Niceville, but the black margins on the 

 upperside of the male are not quite so broad as in the rainy-season form 

 of that species. The creamy-white ground-colour of the underside is, 

 as far as I know, found in no other species in the genus, nor do I know 

 any species which has so large a spot on the middle of the 

 costa of the hindwing on the underside as C. cosscea. If the Cyaniris 

 sp. (?) mentioned from Malacca by Mr. Distant (Rhop. Malay., p. 453, 

 n. 5, pi. xliv, fig. 10, female (1886), is really a female (the blue 

 coloration of the upperside is much darker than is usually found in 

 that sex), it is allied to C. cosscea. The markings and colour of 

 the ground of the underside as pictured agree almost exactly 

 with my examples. But my belief is that the specimen figured is a 



Described from numerous males and females in my collection, and 

 many others in Dr. Martin's, from N.-E. Sumatra (one taken at 

 Namoe Oekor on 17th November, 1892), and one from Pengalengan, 

 West Java, 4,000 feet, by Mr. H. Fruhstorfer. 



