The undersigned is desirous of extending the present paper so as to include 

 all the Entomogenous plants of North America, and wishes to procure by exchange 

 or otherwise as large an amount of material for comparison as possible. For this 

 purpose correspondence is invited, especially information concerning fungus 

 epidemics among noxious insects. Address, after July i, 1888, 



ROLAND THAXTER, 

 Cambridge, April, 1888. New Haven, Connecticut. 



