PLATE III. 



Fig. 



1. la, c. Alaria armata, p. 16, back view. 



1^- — — front view; d, portion magnified. 



2. Alaria hamus, p. 16. 



2 a. — — portion magnified. 



2d. — — front view. 



3. 3 a. Alaria laevigata, p. 17. 



4. 4-b. Alaria hamulus, p. 17, back view. 



4 a. — — specimen magnified. 



5. Alaria Phillipsii, p. 18; and p. Ill, Plate XV, figs. 15, 15a. 



5 a. — — portion magnified. 



6. Alaria pagoda, p. 18 ; and Plate XIII, figs. 4, 4a. 



7. la. Alaria atractoides, p. 19. 



8. Alaria hexagona, j?;. 19. 



9. Alaria paradoxa, /;. 20, front view; and Plate XIII, fig. 3. 

 9a. — — var. a, back view. 



10. — — back view. 



11, 11*5. Alaria trifida, p. 21, front view. 

 11a. — — back view. 



lie. — — portion magnified. 



12a. Alaria parvula, p. 22. 



12*5. — — magnified. 



13. 13a. Alaria cirrus, p. 22. 



14. Pteroceras ignobilis, p. 14. 



15. — Bentleyi,/;. 15, front view. 



15. — — back view. 



16. — — var. of, back view. 



