PLATE XIII. 

 Bellerophon Led a Hall. 



Page 200. 

 Fig. 1. Dorsal view of a specimen. 



EUOMPHALUS (CyCLONEMA) RTJ GJELINEATA H. & W. 

 Page 186. 

 Fig. 2. A view of the summit of the specimen. 



Troceonema Yandellana H. & W. 



Page 194. 

 Fig. 3. View of the aperture. 



Trochonema rectilatera H & W. 



Page 193. 

 Fig. 4. View of the aperture. 



" 5. View of the opposite side of the shell. 



Gyclonema can cell at a Hall. 



Page 197. 

 Figs. 6, 7. Views of the opposite sides of a large individual. 



M.URCHISONIA PETILA H. & W. 



Page 186. 

 Fig. 8. View of the spire. 



Pleurotomaria (Isonema) imitator H & W. 



Page 195. 

 Figs. 9, 10. Views of summit and aperture. 



Trochonema emacerata H. & W. 



Page 193. 

 Fig. 11. View of the spire of an imperfect specimen. 



Isonema bellatvla Hall. 



Page 200. 

 Fig. 12. A view of the spire from the anterior side. 



Buc AN I A DEVONICA H & W. 

 Page 195. 

 Figs. 13 14. Lateral and profile views of a specimen. 



Loxonema HYDRAULIC A H. & W. 



Page 193. 

 Fig. 15. View of the spire and part of aperture. 



