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 



Jfc 



Reprinted from the Annals of the Entomological Society of America 

 Vol. XV, pp. 256-280 



Columbus, Ohio: September, 1922 



