1902.] SPIDERS FROM BORNEO AND SINGAPORE. 955 
of appreciation of its shortcomings with which such lowly organisms 
are not usually credited? It seems to me more re: asonable to 
compare such mimetic examples to the pictures of a painter, who 
strives not to make an exact copy of a scene or object, but to give 
an essential idea or impression of it, unintelligible perhaps to 
many, but full of significance to those for whom a picture is more 
than a mere photograph i in colours. 
[It is not necessary to adopt the improbable view that the 
caterpillar has any “appreciation” of the situation, even if we 
may reasonably believe that the mimetic resemblance is aided by 
partial concealment. A larva living among leaves is apt to be 
partially concealed by them and to be protected by the conceal- 
ment. The appropriate attitude would arise through natural 
selection without the intervention of intelligence on the part of 
the larva.—E. B. P.] 
The QWeophylla, one would imagine, has firmly established a 
reputation for ferocity, and consequently the mimicking Geometer 
larva can the more easily deceive its enemies, in spite of its too 
elongate body. Only two specimens were found, both were walking 
on leaves and were readily distinguishable; but the violently 
threatening attitude each assumed when irritated was unmistakable, 
and the resemblance of the elevated posterior end to the ant so 
striking, that it is difficult to imagine how a lizard or frog with a 
previous experience of the ant could fail to be deterred, 
I shall have later to draw attention to a Spider which mimics 
the same ant, but this is a case with a different significance, viz., 
that the mimic may be enabled to prey undisturbed on its model. 
Itis a curious coincidence that, in both the larva and the spider, 
it is the posterior end that mimics the head of the 
coincidence which possibly has its meaning. 
Mimic. Phauda limbata (Wllngrn.). Plate XXIII. fig. 3. 
Model. Serinetha abdominalis (Fab.). Plate XXIII. fig. 2. 
The head, thorax, and coriaceous part of the elytra are, in this 
Hemipteron, of a bright vermilion-red, whilst the membranous 
part of the elytra, the legs, and antennz are black. The moth 
has the head, thorax, costal margin, and basal half of the fore 
wings also vermilion, with the remaining portion black, the hind 
wings are coloured in the same way. I had long been familiar 
with the moth from cabinet specimens, but until I went to 
Singapore and saw the insect alive I had not suspected the 
-significance of this very striking coloration. When the moth is in 
a state of repose, resting, for example, on a plant-stem, the wings 
are laid back and overlap in the characteristic moth- like manner, 
and in this attitude the resemblance to the bug is very striking 
(compare figs. 3 & 2, Plate XXIII.). The hind wings, although 
entirely hidden, nevertheless serve the purpose of giving an 
impression of complete opacity to the fore wings, the red and 
black areas of which in this attitude overlap the ‘similar areas of 
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