STUDIES ON THE VARIATION, 
DISTRIBUTION, AND EVOLUTION OF THE 
GENUS PARTULA 
THE SPECIES INHABITING TAHITI 
By HENRY EDWARD CRAMPTON, Pu. D. 
Professor of Zoology, Barnard College, Columbia University 
Curator of Invertebrate Zoology, American Museum of Natural History 
Tue CarRNEGIE INSTITUTION OF WASHINGTON 
WASHINGTON, I916 
