PLATE LXXI. 



Hybrid larvae of Pkilosamia cynihia ' ■ Callosamia promethea ?, described in Psycbe, November, 1!)()2. Photo- 

 graphs from Miss ('. G. Soule. 



Fig. 1. — After iirst. second, and third molts. Both forms. 

 Fig. 2. — Both forms after second and third molts; one molting second lime. 

 Fig. 3. — "promethea form," after fourth molt. 

 Fig. 4. — "cynihia form," after fourth and fifth molls. 

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