SIX WEEKS AMONGST HUNGARIAN BUTTERFLIES. 273 
I should strongly recommend anyone working Herculesbad to 
secure at the outset a very good map of the district, which can 
be purchased at the Bazaar for two krones = 1s. 8d., and which 
shows the position of the various localities well known to lepi- 
dopterists, but otherwise difficult to determine. 
We spent several days collecting by the road (above Hercu- 
lesbad) which traverses the Cserna valley. Here Neptis aceris 
was common, but worn; which was only natural, for Dr. Fischer, 
whom we met and who kindly gave us the benefit of his experience 
at Herculesbad, informed me that the first brood is often out by 
the end of April, and I understood that to get it in perfect 
condition one ought to be in its locality not later than the 
middle of May. Here, also, were Brenthis daphne in plenty— 
with Melitea athalia and var. mehadensis the most abundant 
butterflies. Lycena arion, a small obscure form, occurred in a 
dingle where a stream crossed under the road just beyond a hot 
sulphur spring, where also Hveres argiades var. coretas was not 
infrequent, and a solitary example of Brenthis hecate was netted, 
the only one seen in the district. A clearing on the left side of 
the road, just before we reached the dingle, was gay with 
flowers and large numbers of Lepidoptera, including several 
examples of Carcharodus althee, a species that has always been 
rare with me, and one or two C. alce@; a fine form of Chryso- 
phanus virgauree occurred, and plenty of Thecla acacia, T’. ilicis, 
and 7’. w-album; near this spot, too, Chrysophanus alciphron was 
common. On comparing my specimens of this species from the 
three localities in which they were taken, I found a rather 
striking difference between them. ‘Those from Pészer -are the 
most extreme of the three, with the strongest purple tinge and 
the least indication of copper in both sexes; those from Hercu- 
lesbad had the purple less strongly developed, with a much 
larger amount of copper; and one example that I saw some 
2000 ft. above Herculesbad, but did not capture, struck me as 
very little darker than some Swiss C. var. gordius that I have 
seen ; the Szada specimens are intermediate between those from 
the other two localities. 
A couple of Limenitis popult var. tremule were taken at rest 
on the road near the town; and two or three Apatura ilia var. 
clytie were observed in the same place. Mr. Tylecote the day 
before he left for England (June 22nd) captured on the road, 
about a mile above Herculesbad, a fine Hugonia xanthomelas, the 
only example either of us came across, though Dr. Fischer 
informed me that a Hungarian lepidopterist, a few days before 
our advent at Herculesbad, had taken several. 
A fine brood of Polyommatus orion var. ornata was abundant, 
generally extending as high as the Quelle. Amongst the species 
not usually recorded from Herculesbad was a specimen of 
Chrysophanus thersamon, taken on June 29th in good condition 
