PHILOSOPHICAL 
TRANSACTIONS. 
X. On the Anatomy of the Mole-cricket. By J. Kidd, M. D. 
and F. R. S. Reg. Prof, of Medicine in the University of 
Oaford. 
Read February 3 and February 10, 1825. 
The following observations contain the principal points' of 
a laborious examination of the anatomical structure of the 
gryllotalpa, or mole-cricket ; and if I dare hope that that ex- 
amination has been conducted with any thing like adequate 
accuracy, I need not apologize for the length of the details 
with which the account of it is accompanied, since Cuvier 
has affirmed of an entire volume written by Lyonnet on the 
anatomy of a single species of caterpillar, that it contains 
not one word that is useless. 
Natural science indeed has now arrived at that point, in 
which individual detail is requisite for the acquisition not only 
of a surer basis of classification of species, but also of more 
correct principles of general physiology. Independently 
however of these considerations, the insect, which is the 
subject of the present communication, is so singular in its 
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