Cover title.

At head of title on cover: Iz biologicheskikh izvestiĭ, Tom. I. Gosudarstvennoe izdatelʹstvo. G. A. Kozhevnikov.

German summary: p. 7. Eine uebergangsform zwischen bienenkönigin und arbeiterin.

To help ensure preservation of print and digital collections, this title is retained by Yale University Library on behalf of the HathiTrust Shared Print Program.