136 ME. G. T. BETHTJNE-BAKER : A REVISION OE THE 



other ; cell closed by a larger spot, below which is a small one in the lower median 

 angle ; above the spot closing the cell are two spots above each other, reaching to the 

 costal nervure ; these usually form the first two of the transverse band, which band is 

 shifted slightly outwards, the second spot is shifted slightly out, the third inwards, 

 fourth outwards, fifth inwards, the band being composed of only five spots ; submarginal 

 and marginal rows fairly definite, no spots or metallic scaling at the anal angle. 



Mr. Moore has very kindly lent his type specimen (unique) to me, from which this 

 description is taken. I have more to say about it under the next species. 



Arhopala roona (Moore). 



Narathura roona Moore, J. A. S. B. vol. liii. pt. 2, p. 42 (1884). 

 Arhopala roona Moore; de Niceville, Butt. India, vol. iii. p. 268 (1890). 



Hah. Andaman Isles. 



Expanse, s & ? , 33-39 mm. 



6 & 2 ■ Upperside : both wings rather bright violet-blue ; primaries with costa 

 broadly blackish up to the apex of the cell, where it suddenly increases up to the apex 

 of the wing, outer margin very broad ; secondaries with broad margins all round. 

 Underside exactly like zeta Moore, except that the colour is paler and the markings 

 larger, and also that in the secondaries the two spots usually forming the first two spots 

 of the transverse band are just attached to the rest of the band ; in the type of zeta 

 they are detached. There is no trace of the usual dark anal spots or metallic scaling. 



De Niceville has very correctly diagnosed these two species. I keep them apart 

 with great reluctance : the blue of the upperside is, however, quite distinct, being quite 

 pale, almost silvery and lustrous in zeta ; in roona it is quite violet. The specimen of 

 zeta has, however, a somewhat crippled appearance, and is decidedly smaller, and it 

 gives me the impression of the larva having been starved. If this is so it is not at all 

 unlikely that the colour is abnormal. Recent material has brought to our hands more 

 roona from the Andaman Isles and also from Burma, but no zeta have come. I feel 

 that they are probably one and the same species, but in the absence of sufficient 

 material I refrain from definitely uniting them. 



Arhopala agelastus (Hewitson). 



Amblypodia agelastus Hewitson, Cat. Lye. B.M. p. 12, pi. vi. figs. 61 & 62, ? (1862). 

 Narathura agelastus Moore, Journ. Linn. Soc. London, Zool. vol. xxi. p. 44 (1886). 

 Arhopala agelastus de Niceville (in parte), Butt. India, vol. iii. p. 278 (1890). 



Hab. India ; Mergui ; Burma. 

 Expanse, 6 , 47 mm. 



6 . Upperside : both wings rather bright dark purplish blue ; primaries with costa 

 narrowly black, slightly increasing towards the apex, posterior margin rapidly decreasing 



