•*l 



THE EVOLUTION OF THE HYOBRANCHIAL APPARATUS 



IN THE LARVAE OF AMPHIBIA 



by A. S. Severtzov 



A thesis abstract published by the 

 Institute of Zoology, Academy of Sciences, U.S.S.R. 



1968 



Translated from Russian by Pierre Hart, 

 Department of Russian, SUNY at Buffalo, New York 



Editorial review by 

 Carl Gans and James A. Peters 



SMITHSONIAN HERPETOLOGICAL INFORMATION SERVICES 

 1970 



Additional copies available from: 



Division of Reptiles and Amphibians 



United States National Museum of Natural History 



Washington, D. C. 20560 



