PLATE 40. 
Fig. 1, 238. 1. 
1 a , b. Lateral and dorsal views. 
Carinaropsis carinata. ( Pag. 183.) 
1 c. Lateral view of another specimen, showing a more elevated carina. 
Fig. 2. 
2 a. Dorsal view. 
239. 2. Carinaropsis patelliformis. 
2 b. Lateral view of the same specimen. 
(Pag. 183.) 
Fig. 3. 240. 1. Bellerophon 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, var . acutus. (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 b. 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.) 
8 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 carinse 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 f. Lateral view of the same, showing the umbilicus. 
8 g. Section of the last volution below the aperture. 
