PLATE XIX. 



Turbo shumardi. 



Fig. 1. Apertural view of a specimen. Page 191 



Fig. 2. Dorsal view of a specimen. 



Fig. 3. Vertical view of a specimen. 



Fig. 4. Vertical view of a larger specimen. 



Platyostoma lineata. 



Fig. 5. Vertical view of a specimen. Page 183 



Fig. 6. An enlargement of a portion of the test. 

 Fig. 7. Apertural view of a specimen. 

 Fig. 8. Dorsal view of a -specimen. 



