VOLUME ELEVEN NUMBER FOUR
JOURNAL
OF
ENTOMOLOGY
AND
ZOOLOGY
DECEMBER, 1919

PUBLISHED QUARTERLY BY
POMONA COLLEGE DEPARTMENT of ZOOLOGY
CLAREMONT, CALIFORNIA, U. S. A.

	Page
Notes on the Behavior of the Social Wasp Polistes—Horace Gunthorp	[63]
Biology of the North American Crane-Flies. V. The Genus Dicranoptycha—Charles P. Alexander	[67]
The Central Nervous System of Nucula and Malletia—W. A. Hilton	[75]

Entered Claremont, Cal., Post-Office Oct. 1, 1910, as second-class matter, under Act of Congress of March 3, 1879

Journal of Entomology and Zoology

EDITED BY POMONA COLLEGE, DEPARTMENT OF ZOOLOGY