them, and particularly from Levinson, I have received 
valuable comments, notations of omissions and help with the 
missing literature. As a consequence of their laborious and 
unselfish assistance, I feel that I am able to present this 
Handbook of Ostracod Taxonomy to future workers, with the 
assurance that it is the best which may be done in American 
Libraries at the present time. Less than 10 essential 
papers, so far as I have been able to learn, are missing 
from my personal library, and all are so indicated in both 
the Index portion and in the Bibliography. 
XViii 
