Ernst Mayr, Alexander Agassiz Professor of Zoology and a researcher and writer on evolution and natural selections, will become Director of the Museum of Comparative Zoology on July 1. He will succeed Alfred S. Romer, who also holds an Alexander Agassiz Professorship.

Romer, Director of the Museum for the past 15 years, will continue to teach and do research at the University.

Mayr is the author of Systematics and the Origin of the Species and Methods and Principles of Systematic Zoology.

Before his appointment to the University in 1954, Mayr was a curator in the Department of Birds of the Natural History in New York City. He also founded the journal Evolution, which he edited for three years.