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 0. leis 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. Hiposcritia 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 leptis, 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. JET. 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. 



