2o Bulletin 22 



PLATE III 



Page 

 Fig. 1. Pleurotoma (Bathytoma) marieana Aid 6 



2. Thais clarkensis Aid 7 



3. Turbonilla (Mormula) mitchelliana 8 



4. Bulima extremis Aid 8 



5. Cerithiopsis greggiensis 9 



