THE NAUTILUS, XXXV 



PLATE II 



Jieestivc tract of 

 StroMlocs lalyriathica 



17 



Jenitaliu of Strotilops latyrinthlca 



1, 2, 15, 16, 17. NENIA BELAHUBBARDI. 3, N. F. TINGAMARI^E. 



4, 5. 12. 13. 14, N. BRYANTWALKE^I. 6. 7. POLYGYRA C. SHASTA. 



8. 9. P. SIERRANA. 10. 11, STROBILOPS LABYRINTHICA. 



