226S OHIQ EXPERIMENT STATION: BULLETIN 194.' 



EXPLANATION OF PLATE XHI. 



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

 defoliated by Catalpa Sphinx July 2, 1906. 



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

 following the successive injuries to the lips of the twigs by the 

 Catalpa Bud Gnat. 



