U. S. NATIONAL MUSEUM 



PROCEEDINGS, VOL 81. ART 6 PL. 2 



West Indian Mollusks 

 1-3, Ceratodisciis heaterisis, new species; 4-6, X«c;'rff//a ')fa/f«.s)s, new species; 7-9, Eiitrochatella btatensis, 



new species; 10-12, E. sphaerula, new species. 



