AMBLYPODIA GROUP OF THE LYC.ENIDiE. 49 



darker and duller, the underside is close in both colour and pattern. From eridanus 



it can be separated in the same way as regards its upperside, whilst beneath it differs 



much more, Felder's species having- a great deal more white, whilst this insect is 

 more uniform and sombre in general tone. 



Arhopala eridanus (Felder). (Plate I. fig. 14, <s ; Plate IV. figs. 13 & I'd a.) 



Amblypodia eridanus Felder, Sitzungsber. Akad. Wiss. Wien, xl. p. 453 (I860). 

 Arhopala eridanus Felder, Reise Nov., Lep. vol. ii. p. 229, pi. xxix. figs. 16 & 17. 

 Amblypodia polita Rober, Iris, vol. i. p. 199, pi. ix. fig. 14 (1887). 

 Amblypodia eridanus var. dilutior Staudiugcr, Iris, vol. ii. p. 123 (1889). 

 Amblypodia eridanus Feld., Hewitsoii, 111. Diurn. Lep., Lyca;nida3, p. 5 (1863). 



Hab. Amboina, Palawan. Cagayan (a small island off the coast of N. Borneo), and 

 Balabak. 



Expanse. 3 & 2 , 46-50 mm. 



d . Upperside : both wings pale lustrous violaceous blue, with very narrow black 

 costal and posterior margins in primaries ; in secondaries the costa is broadly blackish, 

 posterior margin very narrowly black, abdominal fold to submedian nervure whitish 

 grey. Underside : both wings brown, spots scarcely darker than ground, broadly 

 encircled with white. Primaries with three discal spots increasing in size, that 

 closing the cell very large and irregular, at the internal upper extremity of which and 

 over the middle spot are one or two small white marks, indicating the trace of other 

 small spots ; on the costa directly over the large spot is a very small one and beneath 

 the cell-spot is another largish one ; below the middle discal spot is the usual one in the 

 submedian area which is large and distinct ; the transverse chain-like fascia is composed 

 of one small spot on the costa, beyond which and quite detached are three chain-spots 

 outwardly inclined, followed below by two more shifted inwards and detached from the 

 three above ; submarginal lunular row fairly distinct ; extreme margin finely white. 

 Secondaries with a half-spot on the extreme internal edge of costa, the white margin 

 of which extends into a white short line along the costa ; four longish basal spots below 

 each other, the fourth being shifted inwards, followed by three others beyond ; cell 

 closed by a longish reniform spot, touching which below is another long spot ; the 

 chain-like fascia is composed of two spots generally touching each other, but not always, 

 below which are four chain-spots, the third one shifted well inwards ; the angular spot, 

 detached and shifted inwards, touches the very long spot which almost reaches the 

 fourth basal spot ; submarginal lunular row distinct, a largish black spot occupies the 

 lobe and the marginal space, above which and over the space intervening are scattered 

 bluish-metallic scales. Extreme margin finely white. The second median nervule and 

 the submedian nervure are slightly elongated, so as to form the trace of a tail on each 

 side of the usual tail. 



vol. xvii. — part. i. No. 7. — August, 1903. h 



