226 OHIO EXPERIMENT STATION: BULLETIN 194. 



EXPLANATION OF PLATE XIII. 



Fig-. 1. Young- catalpa on the farm of Mr. ,Clymer, Chillicothe, Ohio v 

 defoliated by Catalpa Sphinx July 2, 1906. 



Fig-. 2. A catalpa tree illustrating- the characteristic stunted growth 

 following- the successive injuries to the tips of the twigs by the 

 Catalpa Bud Gnat. 



