A CONTRIBUTION TO THE KNOWLEDGE OF 



THE INTERNAL ANATOMY OF 



TRICHOPTERA 



A Thesis 



Presented to the Faculty of the Graduate School of 



Cornell University for the degree of 



Doctor of Philosophy 





By 



HAZEL ELISABETH BRANCH 



Reprinted from the Annals of the Entomological Society of America 

 Vol. XV, pp. 256-280 



Columbus, Ohio: September, 1922 



