PLATE 40. 



pig_ i_ 238. 1. Caeinaropsis carinata. ( Pag. 183.) 



1 o, b. Lateral and dorsal views. 1 c. Lateral view of another specimen, showing a more elevated carina. 



Fjg. 2. 239. 2. Carinaropsis patelliformis. (Pag. 183.) 



2 a. Dorsal view. - *■ Lateral view of the same specimen. 



Fig. 3. 240. 1. Belleeophon bilobatus. (Pag- 184.) 



3 a. Dorsal view, showing the sinus of the aperture. 



3 b. Lateral view, showing the involution of the whorls. 



3 c, d. Two views of a smaller specimen. • 



Fig. 4, 5. 241. 2. Bellerophon bilobatus, uar. actjtus. (Pag. 185.) 



4 a, b. Dorsal and lateral views of the specimen. 5 a, b. Another variety, apparently due to pressure. 



Fig. 6. 242. 3. Bellerophon bilobatus, var. corrugatus. (Pag. 185.) 



6 a. A specimen which is in a stone with three others, only one of which shows a slight development of the 



dorsal folds. 6 6. A specimen less distinctly corrugated. 



Fig. 7. 243. 3. Bucania expansa. (Pag- 186.) 



7 a. View of the back of the shell, showing the strong carina, expanded aperture, and sinus on the dorsal 



margin. 7 b. Lateral view of the same. 



7 c. Transverse section of the last volution, below the aperture. 



7 d, e. Lateral and front view of another specimen, from which the expanded portion of the aperture is broken 



off, and showing also a little deviation in form. 



Fig. 8. 244. 4. Bucania bidorsata. (Pag- 186.) 



S a. Dorsal view of a small specimen, preserving a portion of the shell. 



8 b. View of the aperture, which is very imperfect. 



8 c. A fragment, showing the carinae and dorsal band very distinctly. 8 d. The same enlarged. 



8 e. Cast of a larger specimen, imperfect towards the aperture, and showing only the broad dorsal carina. 

 8/. Lateral view of the same, showing the umbilicus. 

 8 g. Section of the last volution below the aperture. 



