The points which should be especially emphasized in regard to the evolution of the insectan branch of the arthropod lines of development may be briefly summarized as follows: The ancestors of ...
- small class of minute arthropods; unimportant except for the garden centipede ...
OWING to the significance which is attached to the Symphyla in speculations on the origin of insects, a knowledge of their embryology has become desirable. Having recently obtained, in large quantity, ...
- small class of minute arthropods; unimportant except for the garden centipede ...
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