4 
Indiana University Studies 
series from several localities, in some cases having examined 
several thousand specimens of a variety. 
A large part of my collection was obtained during 1919 
and 1920 while I held a Sheldon Travelling Fellowship from 
Harvard University, and I am greatly indebted to the Harvard 
authorities and particularly to Dr. William Morton Wheeler 
of the Bussey Institution. This is my third paper based 
in part on this material (see also 1922, Bull. Amer. Mus. Nat. 
Hist., XLVI, pp. 279-295, and 1922, Ind. Univ. Studies, 53, 
pp. 1-171), and since only a small part of the collection has 
yet been studied, it is evident that very valuable help was 
given in this Fellowship. A representative collection of my 
material is being deposited in Harvard’s Museum of Com- 
parative Zoology. 
Dr. J. T. Patterson, of the Zoology Department of the 
University of Texas, is investigating gall wasp cytology, in 
connection with which he has made a full collection of the 
cynipid fauna near Austin, Texas, and he is making experi- 
mental studies of life histories. Dr. Patterson has been re- 
markably liberal in furnishing me with material and data 
from his observations ; 12 of the forms described in this paper 
and many of the data come from the Patterson collection, 
and that source still has a wealth of unpublished material. 
Some of the observations now published will be further de- 
scribed at a later date by Dr. Patterson, who should be given 
all of the credit for whatever comes from him in the follow- 
ing pages. 
Mr. Frank A. Leach, of Piedmont and Diablo, California, 
a retired newspaper man, formerly Director of the San Fran- 
cisco Mint and formerly Director of U.S. Mints, has given 
me very valuable help for a couple of years in the study of 
Cynipidse. Mr. Leach and his son E. R. Leach have collected 
for me at many widely scattered points in California, they 
have sent material from diverse faunal areas and hosts, and 
have at times sent many thousands of specimens of particular 
species. Details of the data in this paper accredited to Mr. 
Leach often round out important information, and I have 
not yet been able to study most of this material. Our science 
owes much to the help of men who have had the interest and 
taken the time to turn aside from other affairs to help in 
the accumulation of entomologic data. 
