PLATE III. 



Fig. 1. Cadulus colubrideus, n. sp. 



a. The shell, natural size. 



b. The shell, enlarged. 



Fig. 2. Cadulus vulpidens, n. sp. 



a. The shell, natural size. 



b. The shell, enlarged. 



Fig. 3. Cadulus rastridens, n. sp. . 



a. The shell, natural size. 

 6. The shell, enlarged. 



Fig. 4. Cadulus sauridens, n. sp. 



a. The shell, natural size. 



b. The shell, enlarged 



Fig. 5. Cadulus gracilis, Jeffr. 



a. The shell, natural size. 



b. The shell, enlarged. 



Fig. 6. Cadulus simillimus, n. sp. 



a. The shell, natural size. 



b. The shell, enlarged 



PAGE 



18 



e. The transverse section at the mouth. 

 d. The transverse section at the apex. 



c. The transverse section at the mouth. 



d. The transverse section at the apex. 



c. The transverse section at the apex. 



d. The transverse section at the mouth. 



c. The transverse section at the mouth. 



d. The transverse section at the apex. 



c. The transverse section at the mouth. 



d. The transverse section at the apex. 



c. The transverse section at the mouth. 



d. The transverse section at the apex. 



Fig. 7. Cadulus curtus, n. sp., var. congruens, 



a. The shell, natural size. 



b. The shell, enlarged. 



Fig. 7. Cadulus curtus, n. sp. 



e. The shell, natural size. 

 /. The shell, enlarged 



Fig. 8. Cadulus obesus, n. sp. 



a. The shell, natural size. 



b. The shell, enlarged. 



c. The transverse section at the mouth. 



Fie. 9. Cadulus tumidosus, Jeffr. . 



a. The shell, natural size. 



b. The shell, enlarged. 



c. The transverse section near the mouth. 



Fig. 10. Cadulus exiguus, n. sp. 



a. The shell, natural size. 



b. The upper part enlarged, showing the circular 



shelf. 



Fig. 11. Cadidus ampullaceus, n. sp. 



a. The shell, natural size. 



b. The shell, enlarged. 



c. The lower end of the shell, more enlarged. 



c. The transverse section at the mouth. 



d. The transverse section at the apex. 



g. The transverse section at the mouth. 

 h. The transverse section at the apex. 



d. The transverse section at the apex. 



e. A view of the pierced diaphragm near the 

 apex. 



d. The apex, more enlarged, showing the circular 

 shelf. 



e. The transverse section near the apex. 



c. The transverse section near the mouth. 



d. The shell, enlarged. 



e. The transverse section near the apex. 



d. The apex, still more enlarged, showing the 

 circular shelf contracting the opening. 



19 



19 



20 



20 



21 



21 



22 



22 



23 



23 



