MONOGRAPHS OF THE ROCKEFELLER INSTITUTE FOR MEDICAL RESEARCH No. 13 November 15, 1920 THE EARLY STAGES OF TABANID^E (HORSE-FLIES) By WERNER MARCHAND, Ph.D. NEW YORK ^ The Rockefeller Institute for Medical Research Copyright, 1920, by The Rockefeller Institute for Medical Research WAVERLY PRESS The Williams & Wilkins Company Baltimore, U. S. A. MONOGRAPH No. 13 THE EARLY STAGES OF TABANID/E (HORSE-FLIES) BY WERNER MARCHAND, Ph.D, NEW YORK The Rockefeller Institute for Medical Research 1920 Digitized by the Internet Archive in 2017 with funding from University of Illinois Urbana-Champaign Alternates https://archive.org/details/earlystagesoftab00marc_0 S 75". 7/ tA33^ MONOGRAPH OF THE ROCKEFELLER INSTITUTE FOR MEDICAL RESEARCH, NO. 13, NOVEMBER 15, 1920. i