EVOLUTION 



335 



perfectly jointed and clawed, suggesting a correspondence 

 with thoracic legs. 



We have concluded that among the Endopter\'gota, as 

 among the Exopterygota, the mandibulate orders are more 



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^..^^ 



:^^^ 



cs> 



&- 





I 

 <^^ 



^ 



^ 



Fig. 78.— a, Fust-stage Larva of Scorpion-fly {Panorpa klugi) Japan 

 siae-view), X 30 6 full-grown lar^'a (side view), x 6. After T.Mi^^ke 

 {Umv. Tokyo Coll. Agr.Journ. iv, 1912). 



primitive than those which take food by suction. The 

 Mecoptera and Neuroptera have t>^pical biting jaws, v.hile 

 among the Trichoptera and the vast majority of the 



