OF THE ANNULOSA. 



395 



distinguishable in the columns as above disposed. For this 

 purpose 1 shall lay before the reader a table, expressing all 

 the analogies which have been now given in detail, premis- 

 ing only that it is carefully to be kept separate from any no- 

 tion of the progression of affinity, such as is expressed by 

 the other figure. It results, however, as may easily be dis- 

 cerned, merely from the corresponding points in those five 

 circles being joined together*, every line expressing the 

 existence of an analogy between the points it connects. 



Chilo- 

 pod, 



Lamo 



dipodd 



Orffio- 

 tptera. 



-ptera. 



ptera. 



* Nothing in Natural History is, perhaps, more curious than that these 

 analogies should be represented by a figure so strictly geometrical. One is 

 almost tempted to believe that the science of the variation of animal struc- 

 tures may, in the end, come within the province of the mathematician. 



