Ernst Mayr Library 



Museum ot Compaiative Zoülogy 

 Harvard University 



ii« 



HARVARD UNIVERSITY 



CSj:- 

 IM. 



DEPARTMENT OF MOLLUSKS 



IN THE 



Museum of Comparative Zoology 



Giß of: 

 RICHARD 1. JOHNSON 



"" OEC - ' 1931 



LIBRARY 



OFTHE 



