THE BIOLOGY 

 OF 



DRAGONFLIES 



(ODONATA OR PARANEUROPTERA) 



BY 



R. J. TILLYARD, M.A. (Cantab.) 



B.Sc. (Sydney), F.L.S., F.E.S. 



Macleay Fellow in Zoology to the Linnean Society of New South Wales 



Late N.S.W. Government Research Student in Zoology in the 



University of Sydney; formerly Foundation Scholar 



of Queens' College, Cambridge ; and Assistant 



Mathematical and Science Master at 



Sydney Grammar School 



Cambridge : 



at the University Press 



1917 



