TAB. XXL 



Fig. 



1. Bulla cylindracea.. page 175. 



a. view of aperture, var. vulgaris 



b. var. monstrosa. 



c. view of apex of var. vulgaris. 



2. Bulla coimlus, p. 173. 



a. front view. 



b. back view. 



c. view of apex. 



3. Bulla truncata, />. 17G. 



a. front view. 



b. back view. 



c. view of apex. 



4. Bulla Regulbiensis, ^j. 177. 



a. front view, var. « . 



b. front view, var. ft. 



c. view of apex. 



5. Bulla Lajonkaireana, p. 178. 



a. back view. 



b. front view. 



r. view of apex. 



G. Bulla concinna, p. 1 70. 

 f/. view of aperture. 



b. back view. 



c. view of apex. 



7. Bulla acuminata, p. 174. 

 «. front view. 



b. back view. 



c. end view. 



Fig. 



8. Bulla lignaria, p. 173. 



a. back view. 



b. front view. 



9. Bullffia quadrata,jy. 179. 



a. view of interior. 



b. view of exterior. 



c. end view. 



10. Bulln?a sculpta, p. 180. 



a. view of aperture. 



b. view of exterior. 



c. end view. 



1 1 . Bullasa ventrosa, p. 182. 



a. view of aperture. 



b. vieAv of exterior. 



c. end view. 



12. Bullsea scabra, p. 181. 



a. view of aperture. 



b. view of exterior. 

 '•. view of apex. 



13. Bulla nana, p. 178. 



a. back view. 



b. front view. 



(Tlie small figure is the natural size). 



14. Cleodora infundibulum, p. 191, 



The lutes indicate the size of /he specimen*. 



