216 
LEPIJD OPTJERA IN PICA. 
very pale brownish-ochreous, with faint dusky subcostal and median vein-borders 
and discal band. In the extreme dry form (Amboides) the upperside of the forewing 
has the apical band narrower, and the hindwing is entirely white, without any 
trace of marginal markings. The forewing has the costal border and apical band, 
and the hindiving, pale yellowish-ochreous, the hindwing showing but very faint 
traces of the subcostal and median dusky borders, the discal band being entirely 
absent. 
Female. Upperside. J brewing with the medial white streaks broader than in 
‘Wet form, and confluent, the lower extending to beneath the lower median veinlet, 
below which is a slight streak along posterior margin. 1 Windwing with the medial 
white streaks broader than in the wet form, the lower basal and discal area being 
also greyish white. Underside similar to the wet form except that the costal 
and apical border of the fore wing, and the hindwing is of a pale ochreous- 
brown. 
Expanse, d 2 to 2J, ? 2^ inches. 
Habitat. —N.E. India; Burma; Tenasserim. 
Distribution. —We possess specimens of the wet-season form from Sikkim, 
Silhet, Khasias, Manipur, Burma, and the Shan States, and of the dry-season form, 
the male types of Arriba and Amboides. Capt. E. Y. Watson writes, “ This species 
(Rama) with its dry-season form ( Amba ) occurs fairly common throughout N.E. 
India, and Burma” (J. Bombay N. H, S. 1894, 496). Mr. H. J. Elwes records it as 
being “ common in Sikkim up to 3,000 or 4,000 feet elevation, nearly all the year 
round. The specimens found in the cold weather from December till March have 
the underside of a pale greyish-brown with hardly any green tint, and the markings 
almost obsolete ” (Tr. Ent. Soc. 1888, 417). Mr. L. de Niceviile writes, “It is 
common in Sikkim at low elevations from March to December. The spring or dry- 
season form, named Amba, is much smaller and paler than the rains form, having 
the underside pale greyish-brown instead of rich green ” (Sikk. Graz. 1894, 168). 
Col. C. Swinhoe records it from the Khasias (Tr. E. Soc. 1893, 309). Col. C. H. E. 
Adamson obtained it in “ Bhamo and Upper Tenasserim. It varies much in size 
and in the tone of the colouring of the underside ” (List, 1897, 44). Mr. O. Limborg 
took it in “ Houngduran ; Taoo at 3,000 to 5,000 feet, in March ; Moolai and Moolat, 
3,000 to 6,000 feet ” (P. Z. S. 1878, 838). Capt. Watson (l,c. pi. 2, fig. 6) figures the 
male of rainy-season form, taken in the N. Chin Hills, Upper Burma, in April, and 
(fig. 7) from the Yaw District, taken in December ” (J. Bombay N. PI. S. 1894, 
496). 
Of our illustrations on Plate ,545, fig. 2, 2a are from a male and 2b a female of 
the wet-season form from E. Bengal; fig. 2c, d from the male type of the dry-season 
form Amba , and 2e from a Sikkim female. 
