(_-elxe’ *) 
base, the scale is broader on the fold to some extent but not 
uniformly so, and the ribbing is the same, yet there is some- 
thing as yet unknown that quite alters the shade of blue. I 
shall refer to this again in dealing with colours later on. 
Arhopala hercules, the largest species of the genus, is entirely 
very metallic deep purplish blue, one of the quite aniline 
colours to the naked eye and very lustrous; the ordinary 
blue scales over the greater portion of the wing are of one 
pattern, a longish, rather broad one, suddenly rounded at the 
basal corners and almost square at the apical corners, the 
apex being generally but not always quite abruptly truncated ; 
it is of even width throughout, there being but the least and 
shortest possible tapering off at the apex; the ribbing is 
somewhat coarse; on the fold the scales are narrower; there 
is also a peculiar scale on the costa, more or less on the inner 
edge of the costal cable, it is a long scale quite tubular, 
narrower at the base with the normal attachment peduncle, 
and at the apex tapering to a blunt point; this is by no means 
a hair-like scale, but in this species the evolution of the costal 
cable scales might be said to be present; this simple one is 
in some numbers, there is also a second, quite similar but 
somewhat wider at the apex and slightly bifid, others that 
are wider still but tubular and distinctly bifid, whilst there 
are others, trifid and quadrifid, that are approaching the 
usual flattened scale, though quite evidently derived from 
the original tubular design; they are distinctly hollow tubes 
and are filled with minute granules of a greyish substance; 
they are finely shagreened with very minute lines not ribbed 
as the usual cable scale is; the cable itself is composed largely 
of the usual longish apparently flat scales with bifid, trifid 
and quadrifid serrated apices, the special tubular scales being 
more on the inner edge of the cable, though not entirely 
confined thereto. 
Turning now to the white species of the group, I find in 
Larinopoda lagyra that the scaling is very diverse from the 
brown and blue sections. The fringe scales are Indian club 
shaped with the club very heavy, and they are very coarsely 
ribbed, the costal cable is composed of the same type of scale 
with varied apices, some as the terminal fringes others bifid 
