122 ME. G. T. BETHUNE-BAKEE : A EEVISION OF THE 



I have very carefully compared de Niceville's acestes with this species and find it is 

 identical ; the upper surface of his two specimens (one from Perak and the other from 

 Penang) is a shade purpler, but I have one from Dr. Staudinger from Malacca which 

 is of the ordinary colour, and the underside pattern is precisely similar in all. The 

 colour of the upper surface and the distinct markings of the underside at once 

 separate it from any other species. Its distribution is peculiar, it hitherto having 

 been recorded only from the Philippine Islands, Malacca, and Penang. 



Arhopala bblla Bethune-Baker. 

 Arhopala bella Bethune-Baker and Druce, P. Z. S. Lond. 1896, p. 664, pi. xxx. figs. 6 <$ , 7 5 . 



Hab. Kina Balu (Borneo). 



Expanse, 6 55, $ 48 mm. 



This very beautiful and (in the male) very unusual looking species will come nest 

 to A. corinda Hewitson, but may at once be recognised by its large size, its brilliant 

 purple margins, and its lustrous brown inner areas ; the transverse bands are also 

 somewhat different. A. corinda below has a more spotted appearance than A. bella. 



Arhopala buruensis Holland. 

 Arhopala buruensis Holland, Novit. Zool. vol. vii. p. 78 (1900). 



Hab. Buru Island. 



Expanse, s 32, 2 30 mm. 



I have not seen this species, which Mr. Holland places near my kounga (the azinis 

 de N.), and in my inability to compare the types it is impossible to do more than 

 record the species, which in this section of the group are differentiated by so small 

 or inconspicuous markings that it is not safe to make any remarks on the insect 

 unless we have the species before us. 



Arhopala azinis de Niceville. 



Arhopala azinis de Niceville, Journ. Bomb. Nat. Hist. Soc. 1895, p. 3, pi. T. fig. 31. 



Arhopala kounga Bethune-Baker and Druce, P. Z. S. Lond. 1896, p. 662, pi. xxx. fig. 4, ? 



(nee fig. 3, $). 

 Arrhopala azinis de Niceville and Martin, J. A. S. B. vol. lxiv. pt. 2, p. 466. n. 403 (1895). 



Hab. Sumatra (N.E.) ; Borneo (Kina Balu). 



Expanse, d & $ , 34 mm. 



2 . Upperside : both wings like the male, but blue slightly more violet and much 

 less extensive, the primaries having a large black invading patch at the end of 

 the cell. 



My description of kounga appeared just after de Niceville's had been published, and 

 I find the male figured in my paper is only a curious form of aroa, the female being 

 that sex of de Niceville's species. In that specimen, however, the black invading patch 



