496 L. de Niceville & Dr. L. Martin— Butterflies of Sumatra. [No. 3, 
must be more common in the Gayoe-lands, as the Gayoe collectors 
always brought it in largely. 
540. Terias sari, Horsfield. 
Wallace. Distant. This species is well figured by Distant, and 
by Snellen in Midden-Sumatra, Lepidoptera, pi. i, figs. 8, 9, male (1892), 
as T. liecabe , Linnaeus, var. two. The Sumatran is absolutely identical with 
the Indian form. Both sexes have a double line at the end and a small 
linear marking at the middle of the discoidal cell of the forewing on the 
underside. The female is of a paler yellow colour than the male, with 
the marginal band on the upperside of the hindwing twice as broad 
throughout its length, posteriorly inwardly diffused and powdery. 
T. sodalis, Moore, described from the Mergui Archipelago in Lower 
Burma, the types of which are in the Indian Museum, Calcutta, is a 
synonym of T. sari. Moore says his species is smaller than T. sari , 
but we have Sumatran specimens quite as small, but the marginal band 
on the upperside of the hind wing in both sexes is certainly somewhat 
narrower in both sexes of T. sodalis than in T. sari , but this very 
poor character is not in my opinion sufficient to separate the two 
specifically. 
541. Terias toba, de Niceville, n. sp. 
Habitat : N.-E. Sumatra. 
Expanse: c?, 1*2 and 1*6; $ , 1*6 inches. 
Description : This species has been well figured by Snellen in 
Midden-Sumatra, Lepidoptera, pi. i, figs. 10, 11, female (1892), as 
T. hecabe , Linnoeus, var. one. It appears to be allied to T. sari , Hors¬ 
field, and has in both sexes a double line at the end, and two (instead 
of one) small markings towards the base of the discoidal cell. Like 
T. sari, it has the cilia of both wings black. It differs, markedly, 
however, from that species in its much smaller size; its very pale 
primrose colour (T. sari is dark yellow) ; in the very large apical brown 
patch on the underside of the fore wing of T. sari reduced to a small 
linear brown band, and the oblique brown marking at the outer 
angle of T . sari altogether absent. The “ male-mark ” in this form is 
short, broad, and very prominent. The female is even paler yellow than 
the male, being almost as white as in the same sex of T. harina , 
Horsfield. The marginal band on the upperside of the hindwing is 
twice as broad as it is in the male, being of the same width as in 
the male of T. tilaha, Horsfield. It is possible that the male of 
T. toba has been figured by Distant in Rhop. Malay., pi. xxvi, fig. 13, 
male , as T. senna , Felder. True T, senna (see No. 538 above) belongs 
