THE COCKROACH : ITS NERVOUS SYSTEM. 



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Fig. 39. Nervous System of Female Cockroach, x G. a, optic nerve ; b, antennary 

 nerve ; c, d, e, nerves to first, second, and third legs ; /, to wing-cover ; g, to 

 second thoracic spiracle ; h, to wing ; i, abdominal nerve ; j, to cerci. 



