PROTODONATA 



'9 



ovipositor in Asthenohymen (vide Tillyard, 1936a) seems to be the 

 only character which might suggest affinity with Hymenoptera. 



Protodonata Handl. These insects are readily separated from 

 Odonata by the absence of a true nodus and pterostigma from 



Fig. 40. Reconstruction of Lemmatophora typa Sellards. 

 (After Carpenter.) 



the wings. Their venation is distinguished from that of the 

 Palseodictyoptera by (a) the network of cross-veinlets being at 

 right angles to the main veins and their branches, instead of 

 forming an irregular and obliquely distributed meshwork ; and 



