TABANIDAE OF OHIO. 
WITH A CATALOGUE AND BIBLIOGRAPHY OF THE SPECIES 
FROM AMERICA, NORTH OF MEXICO. 
INTRODUCTION, 
With Osten Sacken’s admirable “Prodrome of a Monograph 
of the Tabanidz of the United States,’ most of the species of the 
family from the eastern part of our country may be identified 
readily. And with Williston’s paper in the tenth volume of the 
Kansas Academy of Sciences most of our species not included 
in the above contribution are fully characterized. Hart’s paper 
in the fourth volume of the Bulletin of the Illinois State Labor- 
atory of Natural History is also useful in separating the various 
stages of the genera Tabanus and Chrysops, and is an important 
contribution to the life histories of a number of species of these 
two genera. The economic position occupied by the family is 
admirably treated in Osborn’s paper on “Insects Affecting Do- 
mestic Animals,’ in Bulletin number five, new series, of the 
United States Division of Entomology. Other important con- 
tributions have appeared from time to time, but a thorough ac- 
quaintance with all this literature will not always give the stu- 
dent of the group the information he desires regarding points 
which come up in connection with many of the species of our 
fauna. 
It is my intention in this paper to give some of the results 
of observations on habits taken during a somewhat extended 
study of members of the family, and follow with a systematic 
treatise of the forms known to occur within the bounds of the 
state of Ohio. At some future time, when the necessary mate- 
rial has accumulated it is the intention to give a full treatise of 
all the forms known to occur in North America. 
The following have aided me up to the present time, in sub- 
mitting material for study: 
The United States National Museum; The Museum of Com- 
parative Zoology; F. L. Harvey; Charles Dury; H. A. Gossard; 
C. P. Whitney; E. D. Ball; E. B. Williamson; J. C. Bridwell; 
Miss S. E. Harris; Chas. W. Johnson; C. C. Deam; Iowa State 
tollece Oa liuaieys me C..Osbtrmm:> Nh. V. Idanvey >... 4, 
Oslar; F. F. Crevecoeur; Carnegie Museum; University of Kan- 
sas; Hi. S. Parish;.R. H. Kunzé; J. T..Lloyd; Franklin Sher- 
man, Jr.; Charles Fuclts; Mrs. Anna T. Slossen. 
