Cf, 
AX 
Yr} 
eS 
[2 
Ernst Mayr Libran 
Museurn of Comparative Zoology 
Harvard University 
2.0895 
HARVARD UNIVERSITY 
eT 
LIBRARY 
OF THE 
DEPARTMENT OF MOLLUSKS 
IN THE 
MUSEUM OF COMPARATIVE ZOOLOGY 
Gift of: 
RICHARD I. JOHNSON 
