498 
BIONOMIC NOTES 
on the other hand, in four cases it is noted that the scent appeared 
to come from the wings, in one of these from their upper surface. 
I then tried the effect of rapid dismemberment immediately after 
pinching:— 
(a) A male seen on the wing with tufts displayed. It was 
caught, pinched and the abdomen amputated. The abdomen yielded 
no scent, but what I may term the torso had a slight acetylene scent, 
which appeared to come from the wings. 
(b) A male with the tufts displayed: the amputated abdomen 
yielded no scent, but the wings a moderate acetylene scent. 
(c) A male with the acetylene scent: amputation proved that it 
was certainly not connected with the abdomen. 
(d) A male was dismembered: the scent appeared to come from 
the thorax. 
(e) A female with pungent odour was dismembered: the scent 
appeared to originate in the thorax. 
(/) A female was dismembered: the scent appeared to come 
from either the thorax or the base of the wings. 
From these facts I am forced to the conclusion that in Crastia 
and in Tirumala the scent—which moreover is common to both 
sexes—whatever its source may be, is independent of the genital 
tufts which form such a conspicuous feature. This conclusion is 
contrary to my first impression—and certainly contrary to the 
impressions of such an experienced collector as Commander J. J. 
Walker, E.N. 
Euploea ( Crastia ) aifrymone, Godart, f. hiribergi, Wallgr. (China, 
1904). The acetylene scent was noted in several males, once it was 
so strong as to be obvious as soon as the insect was in the net. 
Euploea ( Trepsichrois ) midamus , Linn. (, superba , Herbst.). (China, 
1904). The acetylene odour of a female was perceptible when it 
was in the net. 
[. Euploea (Trepsichrois ) mulciber , Cram. (Borneo, 1903). Mr. 
Shelford found the eversible tufts in the male to be sweetly 
scented.] 1 
Euploea ( Pademma , Salpinx) hollari , Feld. (Calcutta, 1903). A 
single male had a slight, peculiar, rather disagreeable scent. 
Euploea ( Salpinx) sinhala , Moore, considered by Bingham to be a 
local race of the preceding. (Ceylon, 1908). Two males were examined 
with the following results:— 
(a) Acetylene odour, moderate in the field, slight at home. 
(b) Moderate acetylene scent in the field, none in the house. It 
1 R. Shelford, in litt . 
