RESEMBLANCES AMONG ANIMALS. 97 
beautiful Gymnocerous dulcissimus is also very like 
the same group of insects, though there is no known 
species that exactly corresponds to it; but this is not 
to be wondered at, as the tropical Hemiptera have 
been comparatively so little cared for by collectors. 
Insects mimicking Species of other Orders. 
The most remarkable case of an insect of another 
order mimicking a beetle is that of the Condylodera 
tricondyloides, one of the cricket family from the Phi- 
lippine Islands, which is so exactly like a Tricondyla 
(one of the tiger beetles), that such an experienced 
entomologist as Professor Westwood placed it among 
them in his cabinet, and retained it there a long time 
before he discovered his mistake! Both insects run 
along the trunks of trees, and whereas Tricondylas are 
very plentiful, the insect that mimics it is, as in all 
other cases, very rare. Mr. Bates also informs us that 
he found at Santarem on the Amazon, a species of 
locust which mimicked one of the tiger beetles of the 
genus Odontocheila, and was found on the same trees 
which they frequented. 
There are a considerable number of Diptera, or two- 
winged flies, that closely resemble wasps and bees, 
and no doubt derive much benefit from the whole- 
some dread which those insects excite. The Midas 
dives, and other species of large Brazilian flies, have 
dark wings and metallic blue elongate bodies, resem- 
bling the large stinging Sphegid of the same coun- 
try; and a very large fly of the genus Asilus has 
H 
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