Rt NES AMERICAN MUaRUK 
3 ae AW escon 
| 
Bay 
Ss VOLUME TWELVE NUMBER TWO 
MOL U ME TW NUMBER TWO 
Nef j 
\ 
JOURNAL 
_ ENTOMOLOGY 
& ZOOLOGY 
ora ie TUNE, 1920 
en 
a: PUBLISHED QUARTERLY BY 
POMONA COLLEGE DEPARTMENT of ZOOLOGY 
CLAREMONT, CALIFORNIA, U.S. A. 
Be hc CONTENTS 
Page 
A Srupy oF ‘THE Foop ie dadiea' oF THE ITHACAN SPECIES OF ANURA 
fe, -Durine Mab ke' ts npspin lala Ps) tae ee MO APART 
¥, ¥ 4 ¥ ; ‘ 
ty y ae THE CENTRAL Navaek System or Turee Bivatves—William A. 
Be is Lae CRO ra it b(t BN RBAEDN ES pete AY Avra rae oa AS eke a Ue 
Entered Claremont, Cal., Post-Office Oct. 1, 1910, as second-class matter, under Act of Congress of 
