SMITHSONIAN MISCELLANEOUS COLLECTIONS 

 VOLUME 107, NUMBER 16 



CHARLES T. SIMPSON'S TYPES 



IN THE MOLLUSCAN 



GENUS LIGUUS 



(With One Plate) 



BY 



FREDERICK M. BAYER 



Assistant Curator, Division of Marine Invertebrates 

 U. S. National Museum 



formerly 



Research Assistant, Biological Museum of the 

 University of Miami 



(Publication 3910) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



APRIL 3, 1948 



