1895.] L. de Niceville & Dr. L. Martin —Butterflies of Sumatra. 503 
diluted with pearly-white, the discal area of the forewing primrose- 
yellow, with a broad dark gamboge-yellow area occupying the basal 
two-thirds of the discoidal cell. Dr. Martin thinks that G. leis , Hiibner, 
and G. paulina may be one and the same species. I keep them distinct 
as I can from my Sumatran specimens separate them easily into two 
species in both sexes. The male of G. lets has on the upperside of 
the forewing an inner apical broad black band ( vide Distant’s figure) 
which is quite wanting in G. paulina ; the female of G. leis has the base 
of the forewing on the upperside more broadly black especially at the 
inner margin than in G. paulina , the base of the hindwing also black 
in G . paulina it is white, on the underside of the hindwing in G. leis 
there is a submarginal series of suffused dark spots and the margin 
itself is also blackish, while in G. paulina the hindwing is concolorous 
throughout. In spite however of these apparently good differences it is 
quite possible that specimens intergrading between the two species 
may exist in Sumatra as they certainly do in India. It is an insect of 
the alluvial plain and occurs in the forests, the males on roads with 
G. leis, Hiibner, the females rarer and within the forest. It flies 
throughout the year, and is common at Paya Bakong and near Selesseh, 
not found higher than Bekantschan. 
557. Hiposcbitia pandione, Hiibner. 
Hagen. Staudinger. Grose Smith as lelage [sic]. The H. lalage 
of Doubleday, from the Himalayas, Assam, and Burma, is quite distinct 
from the present species. Males of H. pandione are very common at 
high elevations from Soengei Batoe to the Central Plateau. The 
Battak collectors often brought in hundreds of males, but never a 
female. Occurs throughout the year, as we have specimens caught 
in every month. Of late the Battaks received orders not to catch any 
more specimens. 
558. Hiposcritia leptjs, Felder. 
Staudinger. Distant as leptis , var. plana. Hagen as leptis, var. 
plana . The Appias plana of Butler was described from Malacca and 
Borneo, and cannot be retained as distinct from the present somewhat 
variable species. H. leptis is rather rarer than H. pandione, Hiibner, 
and occurs throughout the year occasionally near Selesseh but commonly 
at Bekantschan. The female is very rare, Dr. Martin possesses three 
only, which present quite distinct indications of an obscure submarginal 
fascia on the underside of the hindwing, which, however, is absent in 
three females from Sumatra and one from Java in my collection. 
