PLATE III. 



Fig. 



1. la, c. Alaria armata, /?. 16, back view. 



!# front view; d, portion magnified. 



2. Alaria hamus, /;. 16. 



20. portion magnified. 



2/5. front view. 



3. 30. Alaria Isevigata, p. 17. 



4. 43. Alaria hamulus. p. 17, back view. 



40. specimen magnified. 



5. Alaria Phillipsii, p. 18; and p. Ill, Plate XV, figs. 15, 150. 

 50. portion magnified. 



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



7. 70. Alaria atractoides, p. 19. 



8. Alaria hexagona, jo. 19. 



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

 90. var. a, back view. 



10. back view. 



11, 113. Alaria trifida, p. 21, front view. 

 110. back view. 



lie. portion magnified. 



120. Alaria parvula, />. 22. 



126. magnified. 



13. 130. Alaria cirrus, p. 22. 



14. Pteroceras ignobilis, p. 14. 



15. Bentleyi, p. 15, front view. 



15. back view. 



16. var. of, back view. 



