598 BIONOMIC NOTES 
(2) Seen to settle three times: twice on yellow leaves of Bryo¬ 
phyllum. 
(3) Seen to settle seven times. Twice on yellow leaves of Bryo¬ 
phyllum (in one case it was very well concealed) ; twice on 
a yellow fern (? Polypodium sp.) • one other time it was 
well concealed, but the plant not noted; on two occasions 
it was less well concealed. 
Constant Spring, Jamaica, January 1st, 1907. A ? of Tevicts 
(?) elathea , Cram, was seen to settle in the shade on a leaf of 
the same colour as the underside of its hind-win^s 
Haragama, Ceylon, February 13th, 1908. I watched a specimen of 
Ixias pyrene , Linn., f. cingalensis, Moore, a $, settle three times 
upon the yellowish leaves of Bryophyllum. 
It should be noted that the faded leaves of the Bryophyllum have 
their margins tinted a purplish-red, resembling in colour the markings 
found on the underside of dry-season specimens of Callidryas eubule 
and Ixias pyrene. 
Lion’s Rump, Cape Town, January 1st, 1910. A male of Synchloe 
hellica , Linn., found asleep on a white flower-head of Antennaria 
sp. It was certainly cryptic. Time 7 a.m. 
“With such facts before me I cannot but believe that the butter¬ 
flies in question instinctively sought out leaves more or less closely 
resembling themselves in colour, with a view to concealment. Un¬ 
doubtedly the most conspicuous butterflies on the wing are Whites 
and Yellows; on the move they are protected by their extremely 
rapid flight, but when at rest they stand in need of special protection. 
Many of these butterflies are restless and rarely settle, except to feed 
on flowers, to drink at damp places, or in the case of females to 
oviposit ; to see them go to rest requires both time and patience ; 
the best way being to watch them the moment that a cloud passes 
over the sun. I have very little doubt that our own Brimstone and 
Clouded-yellows if watched patiently will be found to seek out 
yellow resting-places.” 
With these words I concluded the section of my paper dealing 
with this subject. 1 Soon afterwards it came to my knowledge that 
Dr. Chapman had seen Colias edusa select yellow leaves to rest upon. 2 
And the next year Mr. R. Trimen, F.R.S., wrote me as follows :— 
“At Dornbirn, N. Tyrol, on July 18th, 1904. Opposite the 
hotel verandah where I was sitting there was, just across the road, 
1 Trans. Ent. Soc. Land 1908, p. 643. Bead October 7th. 
2 Proc. Ent. Soc. Lond 1904, p. lxxvi. 
