EPKF^EROPTERA 



Species 



Chromosome Number 

 2n n 



Remark s 



Observer 



References 



Ameletus costalls 



18s 

 l8o, om 



9^(1,11) X-Y6 



Katayama '39a, b Jap. J.G-. If; Z.M. 

 (Jap.) 51. 



A. subarctica 

 elisabethae 



A. viridis 



•In the Odonata the X divides equationallj 

 pole in the 2nd division. 



in the 1st division, and runs undivided to one 

 -109- 



