.86 MR. G. T. BETIiUNE-BAKEE : A REVISION OF THE 



Amhlypodia pryeri Butler, P. Z. S. Loud. 1892, p. 121. 



Arhopala aroa and pryeri Druce, P. Z. S. Lond. 1895, p. 590. 



Arhopala aroa de Niceville and Martin, J. A, S. B. vol. lxiv. pt. 2, p. 465. n. 394 (1895). 



Hob. Sumatra; Malacca; Java; Burma; Penang; Singapore; Borneo; Batchian; 

 and New Guinea. 



Expanse, <s & ? , 42-47 mm. 



This species is easily separated from selta by the plain brown underside, also by its 

 larger size and narrow black margins above. It is an insect of very wide range and 

 varies somewhat in tone of colour both above and below, the blue sometimes being 

 quite blue and sometimes purplish ; the underside markings are very constant. It 

 comes Avithin de Niceville's Indian region ; I have specimens from Burma and from 

 Tenasserim. In Sumatra it is common, and I have it also from Java, Malacca, 

 Singapore, Batchian, Borneo, and New Guinea. The genitalia are of the ordinary 

 pattern, the hooks being slender, but the clasps robust, whilst the penis has a some- 

 what peculiarly shaped orifice, as will be seen from the figure (PI. V. fig. 3 a). 



Arhopala elopura Druce. (Plate V. figs. 4 & 4 a.) 

 Arhopala elopura Druce, Ent. Mo. Mag. ser. 2, vol. v. p. 9 (1894) ; id. P. Z. S. Lond. 1895, p. 590, 

 et 1896, p. 670, pi. xxix. fig. 6. 



Hal. Borneo. 



Expanse, S & ? , 39-42 mm. 



This is evidently one of the commonest species of the genus in Borneo. I have 

 specimens before me taken in every month from March to September inclusive. It 

 is nearest to aroa Hewitson, but may be recognised by its more purple colour above, 

 and easily by its pale underside, by the markings being no darker than the ground- 

 colour, and by the transverse band of the primaries being always dislocated at the 

 fourth spot. The genitalia are peculiar, the hooks being broadly spatulate, with an 

 ample hooded tegumen and heavy clasps ; the orifice of the penis has a peculiar 

 projecting upper lip, as shown in the figure. 



Arhopala rafflesii de Niceville. 

 Narathura amphinuta Distant (nee Felder), Rhop. Malay, p. 267. n. 2, pi. xxi. figs. 9 $ , 10 <$ 



(1885). 

 Arhopala rafflesii de Niceville, Butt. India, vol. iii. p. 248. n. 803, pi. frontispiece fig. 136. 

 Arhopala pseudomuta de NiceVille and Martin, J. A. S. B. vol. lxiv. pt. 2, p. 465 (1895). 



Hob. Burma; Penang, Province Wellesley ; Singapore; Sumatra; Mergui. 



Expanse, <s 43, $ 40-41 mm. 



This species is nearest pseudomuta Staudinger, but can be recognised at once by its 

 much brighter, lighter, and bluer colour, and by the very decidedly broader borders of 

 the upperside, and beneath by the difference in the transverse bands of both wings ; 

 in the primaries the fourth spot is always shifted well out and dislocated (not so in 



