1902.] SPIDERS FROM BORNEO AND SINGAPORE. 233 
Mimic. Condylodera tricondyloides (Westw.). 
Plate XIX. figs. 2, 4, & 6. 
Models. Cicindelide. Plate XIX. figs. 1, 3, & 5. 
I was fortunate enough to discover in Sarawak the remarkable 
Locustid, Condylodera tricondyloides, originally described in 1837 
by Westwood from Java (Trans. Linn. Soc. vol. xviii. p. 409); 
the type specimen was at first placed by Westwood in his col- 
lection of Cicindelide, “regarding it as an immature Colliurus 
or Tricondyla” (l.c. p. 419). Another Javan specimen was 
actually given the MS. name of 7’ricondyla rutipes by Duponchel, 
so close is the resemblance of this highly deceptive Locustid to a 
Tiger-beetle. Both these historical specimens are now in the 
Hope Collection at Oxford, and have been compared with the 
Sarawak specimens by Mr. Malcolm Burr. 
My first specimen, which is somewhat larger than the type, 
was found in jungle in the neighbourhood of Kuching, running 
about on the ground amongst dead leaves and other vegetable 
debris, an environment much frequented by a large Tiger-beetle, 
Tricondyla cyanea (De}j.) var. wallacei (Thoms. 0s with which this 
Locustid is almost identical in appearance (compare Plate XIX. 
figs. 1 & 2). The shape, size, coloration, and even the gait of the 
mimic so closely resembled the corresponding traits of its model, 
that I did not suspect the importance of my find till a careful 
examination of the collecting-box had been made some hours 
after the time of capture. The colour of the head, thorax, and 
abdomen of the Condylodera is a dark shining blue, the femora 
of all the legs are red, the hind femora (w hich are only slightly 
swollen) having in addition a proximal black band. The head 
with its large prominent eyes, somewhat flattened face, and 
conspicuous jaws, is very Cicindelid in appearance. The antenne 
are of extreme tenuity and are about 24 to 3 times as long as 
the body. The densely-punctured prothorax is globosely swollen 
about its middle, the swelling being marked off from the elevated 
anterior border and posterior portion by broad constrictions. 
The tegminal and wing rudiments lie very closely adpressed 
to the body and do not disturb the even contour of the dorsal 
aspect. The abdomen, though hardly so bottle-shaped as are 
the elytra and abdomen of the model, is not widely different in 
appearance, and the intersegmental membranes are quite con- 
cealed except on the ventral surface, where the scuta are small, 
as is usual in this group of insects. 
The model is so common and so well known a species that it is 
unnecessary to describe its general appearance ; the above brief 
description of its mimic will suffice to show in how many super- 
ficial points the two insects agree, and superficiality of resem- 
blance is the key-note of mimicry. 
Another specimen of this mimetic Locustid of the same size was 
obtained a few months later in the same locality; and both these 
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