262 



ENTOMOLOGICAL NEWS 



[Nov., '22 



star, the larva being 15 mm. long- and the wing- 0.65 mm. in 

 length. Here we note again that Rs crosses over Ml and M2. 

 The branches of 7? and M are composed in their distal portions 

 of bundles of fine tracheae lying close together and often wind- 

 ing about each other, a condition already noted in the preceding 

 instar and which has now become more pronounced. C and Sc 

 have also developed a number of fine branches in this instar. 

 This wing too, has many features in addition to its much 

 smaller size, which indicate that it is in an earlier stage of 

 development than that of Needham's fig. 1, B, which shows Rs 

 as lying between Ml and M2. 



Text Fig. A. Wing rudiment from larva of Anaxjunius ; length of larva 33 mm., 



length of wing 1.9 mm. 



Finally, in text fig. A. there is represented a wing 1.9 mm. 

 long, taken from a larva 33 mm. long. The wing in this stage 

 is considerably elongated and the fascicled condition of the ends 

 of the branches of R and M has been abandoned. 



( To he continued. ) 



EXPLANATION 01* PLATE X. 



Figs. 1-8. Wing rudiments from larvae of Anax junins. 

 Figs. 1-3, Length of larvae 9 to 10 mm., length of wings 0.2 to 

 0.22 mm. 



Figs. 4-7, Length of larvae 13 mm., length of wings 0.4 to 0.45 mm. 

 Fig. 8, Length of larva 15 mm., length of wing 0.65 mm. 



