ON NEW AND LITTLE-KNOWN BUTTERFLIES. 277 



both wings fuliginous-black, without any blue gloss whatever. 

 Forewing with a round white area in the middle of the wing, entering 

 the discoidal cell at its lower end, anteriorly bounded by the upper 

 discoidal, posteriorly by the first median nervule. Hindwing with a 

 large discal pure white area, broadest on the abdominal margin, leaving 

 the costa and outer margin with a broad even black border. 

 Underside, both wings pure white, a black anteciliary thread. Fore- 

 wing with the costa narrowly, the apex broadly, the outer margin as 

 far as the submarginal lunular line decreasingly infuscated ; the disco- 

 cellular nervules marked with a rather prominent dusky line ; a 

 curved discal series of five dusky spots darker than the infuscated area 

 on which they are placed ; the submarginal lunular line forming the 

 outer boundary of the infuscated area ; five marginal oval black spots. 

 Hindwing with the costa and base somewhat broadly faintly powdered 

 with fuscous ; the usual three subbasal spots, the anteriormost one on 

 the costa with an outer whitish ring ; an obsolete disco-cellular line ; 

 the usual discal series of spots reduced in number to five, all small but 

 prominent, the anteriormost one on the costa with an outer whitish 

 ring ; a prominent submarginal continuous broad lunular line ; a 

 prominent marginal series of eight spots, the three analmost ones small 

 and contiguous. 



This species belongs to the " Holly-Blue " section of the genus, which 

 contains the British C. argiolus, Linnaeus, and the Northern Indian 

 species, C. celestina, Kollar, C. huegelii, Moore, &c. From the latter 

 the male may be known by its unusually lengthened and narrow 

 forewing ; also by the markings of the hindwing on the underside, the 

 discal series of spots being reduced in number, and the submarginal 

 lunular line and marginal spots being much more prominent. The 

 female is entirely different from the same sex of C. huegelii, on the 

 upperside it has no blue coloration whatever, and one-half the total 

 area is black, the other half pure white. The infuscation of the costa 

 and apical region of the forewing on the underside is a quite unique 

 character. 



Described from four males and one female kindly sent to me by 

 Mr. H. Fruhstorfer, who captured them at Pengalengan, 4,000 feet, 

 West Java, in 1893. 



