PLATE XLIX. 



PAGE 



Figs. 1, 2. Nassa trivittata Say 180 



1. Ventral view. Wailes Bluff. X 2% 



2. Dorsal view of same specimen. 



Figs. 3, 4. Ilyanassa obsoleta ( Say) 181 



3. Ventral view. Federalsburg. X 2 



4. Dorsal view of same specimen. 



Figs. 5, 6. Columbella (Astyris) lunata (Say) 182 



5. Ventral view. Wailes Bluff. X 5% 



6. Dorsal view of same specimen. 



Figs. 7, 8. Eupleeea caudata ( Say) 183 



7. Ventral view. Wailes Bluff. X 2 



8. Dorsal view of same specimen. 



Figs. 9, 10. Urosalpinx cinereus ( Say) 184 



9. Ventral view. Wailes Bluff. X 1% 

 10. Dorsal view of same specimen. 



