376 Mr. H. J. Elwes’ catalogue of the 
Pathalia ? malaya, W. M. & de Nicé., J. A S. B., 1886, 
p. 864. : 
Megisba Thwaitesi, Moore, Lep. Cey., p. 71, t. 84, 
figs. 8, 3a, d, 6,6a, °. 
M. sikkima, Moore, J. A.8. B., 1884, p. 6. 
This species is found in the lower valleys from April 
to November, and in the form described by Moore as 
P. albidisca is not uncommon. In the form described as 
Megisba sikkima it is rarer. I have some difficulty in 
deciding as whether to treat these two forms as distinct 
species, and, judging by the Sikkim specimens alone, 
should be inclined to do so, though I cannot for a 
moment allow that either of the Sikkim forms are 
separable from those found in other parts of India under 
the names of P. malaya and M. Thwaitesi. 
The differences noted by Moore are inconstant, and 
the generic difference between Pathalia and Megisba, 
namely, the presence of a caudal appendage, is certainly 
not constant even in the same species. The amount of 
white on the upper side is very variable, but the under 
sides seem to separate the insects found in Sikkim into 
two groups, though a specimen taken by myself at 
Khandalla, in the Western Ghats, and marked M. 
Thwaitesi by Moore himself, is intermediate between 
the two. 
De Nicéville’s remarks on the species referred to above 
should be studied, and his opinion is that all the three 
forms described by Moore are identical with the one 
variable tailed or tailless species found in the N.E. 
Himalaya, and which we believe to be a form of Lycena 
malaya of Horsfeld, which is from Java and Sumatra. 
I have a specimen from Mr. Moore marked by him 
Neopithecops todara, Moore, which also appears to me to 
belong to this species, though the upper side has more 
the aspect of N. zalmora. 
Doherty says of this species, in J. A. 8. B., 1886, 
p. 184 :—‘‘ All my Kumaon specimens are tailed, as well 
as those taken in Burmah and Chittagong, while in 
Orissa, Ceylon, and the Eastern and Western Ghats, 
their place seems to be taken by a tailless form. Of 
this last those from Ceylon and the Western Ghats are 
apparently Megisba Thwaitesi, but those from Orissa 
and the Eastern Ghats seem to me identical with malaya, 
