XXXviii | Glo 5) 
form appears to be a seasonal phase of G. wewminata, Feld., 
which inhabits the same districts, together with Burma, and 
is marked by extreme angulation of the wings. G. zaneku, 
Moore, is a similar highly-angulated form from northern India. 
G. aspasia, Ménétr., is an acwminata-like type from Amurland, 
and a large race of acuminata from Japan has been named 
G. maxima by Butler. 
‘* Additional data concerning the local and seasonal occur- 
rence of these various forms are much needed. In the mean- 
time certain points appear to be tolerably clear. Each of the 
forms maxima, acuminata and aspasia seems to occur under two: 
phases ; one distinguished by a lower degree of angulation 
and a comparatively smooth surface in the wings of both 
sexes, and by a richer and deeper yellow in the colouring of 
the males ; the other having the fore-wings strongly uncinated, 
with the wings showing a mealy surface much like that of @. 
farinosa, and the colouring in the male generally paler. There 
appears to be some reason to suppose that these parallel phases 
in the three forms have a seasonal significance, and they were 
arranged by Mr. Butler in the National Collection in accord- 
ance with that view; the smooth-surfaced, deeply-coloured,. 
less highly-angulated phase being considered to belong to the 
wet season, and the other to the dry. If this be so, it is 
interesting to observe that the same relation between dry 
season and uncination of the fore-wing obtains in the case of 
this genus as in the other instances from Pierine genera 
(Pyrisitia proterpia and Teracolus auxo) to which I drew 
attention in the volume of our Transactions for 19038, p. 157,. 
and Plate VII, figs. 1-8. It is also significant in relation to 
the principle there laid down, that the most highly angulated 
forms to be met with in the genus are the supposed ‘ dry- 
season’ females, especially, it may be noted, those of G. 
acuminata. Now whatever be the relation between the two 
‘seasonal’ phases of the three forms just mentioned, I have 
little doubt that the same relation holds between G. nipalensis 
and G. zaneka; and I am quite prepared to find that these two 
are simply phases of the same species, the more markedly 
uncinate form G. zaneka belonging to the dry season, and the 
more deeply coloured form G. nipalensis to the wet. 
