PLATE LI. 



PAGE 



Figs. 1-4. Crepiduxa fornicata (Linne) 189 



1, 3. Ventral views. Wailes Bluff. X 1% 



2, 4. Dorsal views of same specimens. 



Figs. 5-8. Crepidula plana Say 190 



5. Ventral view. Wailes Bluff. X 1% 



6. Dorsal view of same specimen. 



7. Ventral view of larger individual. Wailes Bluff. X 1% 

 S. Dorsal view of same specimen. 



Figs. 9, 10. Polynices (Neverita) duplicatus (Say) 191 



9. Ventral view. Wailes Bluff. X 1V 2 

 10. Dorsal view of same specimen. 



257 



