U NOV 1? 1939 i^l 



Sine 



VOLUME TWELVE NUMBER TWO 



JOURNAL 



OF 



ENTOMOLOGY 



AND 



ZOOLOGY 



JUNE, 1920 



PUBLISHED QUARTERLY BY 

 POMONA COLLEGE DEPARTMENT o/ ZOOLOGY 



CLAREMONT, CALIFORNIA, U. S. A. 



CONTENTS 



Page 



A Study of the Food Habits of the Ithacan Species of Anura 



During Transformation — Philip A. Munz 33 



The Central Nervous System of Three Bivalves — WilUam A. 

 Hilton 57 



