512 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. VIII. 
the spot at the base of the cell is invariably wanting. I have taken 
typical T. hecabe in copula with typical T. hecabeoides, T. excavata, 
T. swinhoe, and T. purreea, but never with either T. silhetana or 
T. merguana ; the circumstance of specimens of the dry- and rainy- 
season being taken in copuld is accounted for by their having been 
taken during a break in the rains, or else either at the commencement 
or conclusion of the rainy-season, when both forms can be obtained on 
the wing together. 
To take all the named forms in detail :— 
TL. uniformis differs from T. silhetana only in having a slightly more 
prominent apical brown patch on the underside of the forewing, but 
in pairs of T. stlhetana taken tn coité, where the male has been 
typical T. selhetana the female has been typical 7. uniformis ; in fact 
the brown patch invariably seems more developed in the female than 
in the male. 
T. mooret differs from T, merguiana only in having the marginal 
band of forewing rather less dilated at the anal angle. 
This species, 2. ¢., T. silhetana, occurs in Burma more commonly 
than T. hecabe, and also occurs throughout Southern India though less 
commonly than 7. hecabe. I have it in my collection from numerous 
localities in Burma and 8. India, and also from Assam and Sikkim. 
The dry-season form taken from October to February, and the wet- 
season form from July to September, with a few odd ones at other 
dates. 
T. heliophila was originally described by Mr. Butler from three males, 
“only one in good condition,” taken by Dr. Watt “ near Assam,” one of 
these males is now in the British Museum and must be taken as the type 
of the “species.” This male represents an intermediate seasonal form 
of 7. silhetana, and is very closely matched by the specimen figured 
here on Plate Il, fig. 9. This form was described in 1885, but in 1886 
Mr. Butler apparently repented of his sexing of his type specimen 
above referred to, as he in that year incorporated into the Museum 
collection a male of TJ. excavata from Durbunga as male T. heliophila, 
this specimen now standing in the British Museum as “ 7. heliophila, 
male, type,’ the original Assam specimen, which is also a male, 
standing as “ T. heliophila, female, type.” These two specimens are 
the only ones which are arranged over the name 7, heliophila. 
