DELIAS. 4l9 
Delias TiorsfieJdii, Gray. — " Alis suboblongis, integerrimis, nigris, maciilis albidis triangularibus, 
anticis siibtus maculis apioalibus tribus flavis ; posticis basi margineque interiore flavis, 
subtus maculis ad marginem posteriorem flavis. 
"Expansio alarum 3:^. Habitat in Xepaul." {Gray, Z. M.) 
Delias helladonna. Gray. — " "Wings black with whitish dashes and spots ; the base of the hinder 
wings and the interior margin yellow. 
" Under surface of the fore wings black, spotted with white, and with three apical yellow spots ; 
the hind wings black, the interior margin and spots yellow, with four central white ones. 
" Expanse of wings three inches and a half." {Gray, L. I. N.) 
Occurs commonly at Omei-shan and Moupin, Western China, in July and 
Aujjust at an elevation of 3000 to 4000 feet. Both sexes (Plate XXXVII. 
figs. 3 d , 4 $ ) agree exactly with specimens in my collection that were 
taken in Kulu, and only differ from Kangra examples of the horsfiehlii form 
in Mr. Elwes's collection in being somewhat larger. I believe the specimens 
here figured represent typical helladonna of Fabricius. 
In his ' Catalogue of the Lepidoptera of Sikkim ' (T. E. S. 1888, p. 408), 
Mr. Elwes, referring to D. helladonna, says : — 
" Having recently written on this species, I was careful to take especial 
notice of its habits during my last visit to India, and, though I am not able 
to change my opinion that there is only one species under the several names 
which have been given to it, yet I am able to add something to our previous 
knowledge. I found the dark form ithiela * most common in Sikkim from 
May to August at low elevations, 2000 to 4000 feet, where it frequents the 
banks of streams in hot; thoroughly tropical valleys, and flies slowly about 
the water side, resting sometimes on mud and pebbles almost in the water. 
Some specimens of the variety with yellow on the abdominal margin occur 
here with the pure black one, and some have white or only a yeUow tinge in 
the same part of the hind wing. But neither Moller nor I have ever taken 
females with the males in these places, and all the five females I possess of 
this form were procured from native collectors, and vary in the same 
particulars as the males. I never saw a typical horsfieldii at these low eleva- 
tions, but found it in the dense forest on Sinchul at 6000 to 8000 feet, where 
it settles on paths and in damp places on the ground, and flies slowly in the 
same manner as ithiela. The only female of this form which I got was taken 
by my native assistant at an elevation of nearly 11,000 feet, on the road 
* Ddias {Tliiiea) ithiela, Butler, Ann. & Mag. Nat. Hist. (4) iv. p. 242(1869); Lap. Exot. 
pi. xxiv. fig. 1 (1871). 
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