TAB. XVII. 



Fig. 



1. Capulus obliquus, page 156. 



a. view of exterior. 



b. view of interior. 



2. Capulus ungaricus, p. 155. 



a. side view, var. regularis. 



b. view of interior, var. unguis. 



c. view of exterior „ 



d. view of interior, var. vulgaris. 



e. view of exterior, same specimen. 



f. var. elata, side view. 



g. id. interior view of another specimen, showing the 



muscular impression. 



3. Capulus militaris, p. 156. 



a. view of interior of var. partim-sinuosus. 



b. view of exterior of same specimen. 



c. internal view of a laterally compressed specimen. 



d. internal view of a laterally expanded specimen. 



e. lateral view of young specimen, the volution on a 



level with the base. 

 /. lateral view of an elevated specimen. 



4. Capulus fallax, p. 157. 



a. view of exterior. 



b. view of interior. 



