150 proceedings: entomological society of WASHINGTON 



In reply to a question, Dr. Mclndoo stated that the organs that he 

 had discussed are, in his opinion, used by the insect in selecting its 

 host, but that this is theoretical. Dr. Baker stated that similar 

 organs in aphids undergo modification when the insects change to an- 

 other host plant for a long series of generations, and that in some cases 

 it is possible to determine from this what host plant a given individual 

 developed on. Mr. Busck was of the opinion that the lepidoptera 

 are not so susceptible to changes in host. 



Notes and exhibition of specimens: Mr. Caudell exhibited a speci- 

 men of the Dectician Capnobotes fuUginosus Thomas that had fallen 

 prey to the wasp Palmodes praestans Kohl, the interesting points being 

 that the prey, itself probably predaceous, was killed by a wasp very 

 much smaller than itself and that the wasp is the fourth known speci- 

 men of its species. 



Mr. Wood commented on the fact that living individuals of the woolly 

 apple aphis are now present in aerial colonies and attributed this to the 

 mild winter. 



R. A. Cushman, Recording Secretary. 



