While larvae of the boll weevil, Anthonomus grandis Boh., feed and develop either in squares or in bolls of cotton, the adult weevils prefer squares for food. Not only are the longevity and the period of ovipostion of weevils fed upon squares greater than that of weevils fed exclusively upon bolls, but squares or very small bolls are essential for reproduction. In the latter part of the season if the formation of squares stops, oviposition soon ceases. This requirement of squares for reproduction limits the number of weevils which may go into hibernation in any locality and is a factor in the local distribution of the overwintered weevils the next year.