536 The American Naturalist. [June, 
Professor Herbert Osborn announces the discovery* that Aphis rum- 
icis is the summer form of A. euonymi, and gives observations confirm- 
ing the statement. He also reports upon the relations of the Schizo- 
neura ovipositing on dogwood (Cornus) and the one living on grass. 
roots. 
4 Bull. 23, Iowa Experiment Station. 
