INTRODUCTION 



The following notes are the result of an extended trip made by 

 Dr. McDunnough in the early months of 1916 through the museums 

 of the East for the purpose of studying type specimens and estab- 

 lishing their identity. We would take this opportunity of extending 

 our hearty thanks to the curators of the various museums visited for 

 their invariable courtesy and kindness in offering every facility pos- 

 sible in connection with our work. 



