100 ME, G. T. BETHUNE-BAKER : A REVISION OF THE 



$ ■ Upperside bright violet-blue, the primaries with a broadish purplish-brown 

 costa and very broad outer margins, the apical area being broader still ; secondaries 

 with very broad costa, the outer margin being narrow, but increasing towards the anal 

 angle ; the median and the discoidal nervules are blackish. Underside as in the male. 



This species has rarely, if ever, been rightly identified with Hewitson's type and 

 figures. In his collection are two males labelled hypomuta, one of which agrees 

 absolutely with the figure (pi. ii. fig. 13) in the ' 111. Diurn. Lepidoptera,' and very 

 closely with the previous figures (pi. vi. figs. 63 & 64) given in the ' Catalogue Lycsenidee 

 B.M.' ; but the other specimen is quite different : there is no difficulty whatever, there- 

 fore, in settling which is the type, and I have taken my description of the male from 

 the first type, whilst the female described is from Singapore. 



There is, however, another specimen under this name in the Hewitson cabinet, 

 which is labelled Hypomuta amphimuta, and this no doubt has caused the confusion, 

 more especially as the labelled female specimen belongs to this male ; both are, 

 however, absolutely distinct from Hewitson's species, but they agree fairly well with 

 Felder's figures of amphimuta, and as he probably knew Felder's insect, we may 

 correctly assume, I think, that they are that species. The figures given by Distant in 

 his ' Ehopalocera Malayana ' are probably taken from these two specimens, only his 

 artist has thought it well to add tails to both sexes, which tney do not possess ; were it 

 not for this they would fairly well represent these insects. I have been very careful 

 with the figures here given, and there should be no difficulty in future in recognising 

 the species. 



Arhopala metamuta (Hewitson). (Plate V. figs. 12 & 12 a.) 



Arnblypodia metamuta Hewitson, 111. Diurn. Lep., Lye. p. 13. n. 59, pi. ii. figs. 14 & 15, $ (1863) ; 



Butler, Trans. Linn. Soc. Lond., ser. 2, Zool. vol. i. p. 548. n. 10 (1877). 

 Narathura metamuta Distant, Rhop. Malay, p. 267. n. 10, pi. xxiii. fig. 19, <J (nee fig. 18 $ , 



var. ?) (1885) ; Moore, Journ. Linn. Soc. Lond., Zool. vol. xxi. p. 44 (1886). 

 Arhopala metamuta de Niceville, Butt. Ind. vol. iii. p. 275 (1890). 

 Arrhopala metamuta de Niceville and Martin, J. A. S. B. vol. lxiv. pt. 2, p. 469. 



Hab. Sumatra ; Malacca ; Mergui ; Tenasserim ; Penang ; Burma. 



Expanse, s & $ , 36-42 mm. 



This species is recognisable at once by the different blue of the two wings, the 

 primaries being dark purplish blue, while the secondaries are lustrous azure. The 

 genitalia are specialised, with ample tegumen and very strong short scimitar-shaped 

 hooks ; the clasps have bilobed extremities, the outer lobe having a somewhat pointed 

 tongue-shaped tip, and the inner lobe being spatulate, the incision being marked and 

 moderately deep ; the penis is of medium size, with a globose orifice, the lower lip of 

 which protrudes. 



