VOLUME TWELVE NUMBER ONE 
JOURNAL 
ENTOMOLOGY 
ZOOLOGY 
MARCH, 1920 
PUBLISHED QUARTERLY BY 
POMONA COLLEGE DEPARTMENT of ZOOLOGY 
CLAREMONT, CALIFORNIA, U.S. A. 
CONTENTS 
NEW CALIFORNIA SPIDERS—Ralph V. Chamberlain............0ccc0.cccceeveeee eee 1 
CENTIPEDES AND MILLEPEDES FROM NEAR CLAREMONT............... 24 
SPIDERS FROM CLAREMONT-LAGUNA REGION........ a hoe 25 
CENTRAL NERVOUS SYSTEM OF MYTILUS CALIFORNIANUS 
Li Te err ei Si ee Roe TIS Cece cas Coe EOE Se Ce eae 27 
NOTES ON THE SIPUNCULIDA OF LAGUNA BEACH 
TAUB. | ONAN IGUDDR ss tees canteen sy ana ass -c aaaageneesn haarapuacete waa x+) sande pecuonsea’ 30 
ES SS SEE ———EEE_E_EE eee ———————————E ys 
Fa __ 
Entered Claremont, Cal., Post-Office Oct. 1, 1910, as second-class matter, under Act of Congress of 
March 8, 1879 
