Gee [vi, vii 
towards greater intensity in the female. This is of course 
precisely what we should expect on the hypothesis of their 
value as a means of protection. 
“Ina former communication (Proc. Ent. Soc. Lond., 1905, 
p. lv), I mentioned the possibility that both kinds of scent 
may occur in the same species; I have some reason to think 
that this is the case with ZL. chrysippus. The males of three 
common species of Mylothris, viz., M. agathina, M. ruppellir 
and J, trimenia, possess a well-marked and very agreeable 
odour of which the females show no trace (Proc. Ent. Soc. 
Lond., 1905, p. lviii). There are, as is well known, strong 
grounds for believing this to be a distasteful genus, and it is 
noticeable that both sexes emit on pressure a yellow or greenish 
juice like that of an Acrea. I was never able to convince 
myself that any odour attached to this juice, or, except in one 
case (a female) to the crushed body. But it is quite possible 
that an observer with a more acute sense of smell than I 
possess might arrive at a different result. The disagreeable 
odours of the Huplea group are well known, but Wood-Mason 
(Joc. cit.) records that in Luplea (Danisepa) rhadamanthus, 
Fabr., ‘the eversible caudal rosettes of the males are finely 
vanilla-scented.’ A still more conclusive instance, also noted 
by Wood-Mason, is as follows:—‘The gland covered by a 
patch of modified scales and by an erectile wisp of hairs on 
each hind-wing in the male (of Stichophthalma camadeva, 
Westw.) secretes a fluid that gives out a pleasant odour distinct 
from, but so faint as to be barely perceptible in the presence 
of, a much stronger odour (resembling that of sable fresh from 
the furrier’s shop), which is common to the two sexes.’ 
“ A point of much interest in connection with these scents, 
their diverse characteristics and presumably diverse signifi- 
cance, is the probability thus suggested of a certain corre- 
spondence between human esthetic preferences and those of 
some at least of the lower animals.” 
The general character—agreeable or the reverse—of the 
odours emitted by the various species shown, as also the 
property belonging to some of them of exuding a yellowish 
or greenish fluid on pressure, was indicated in the exhibit by 
means of coloured labels. 
