PLATE 39. 
Fig. 1. 233. 10. Mtjrchisonia bellicincta. (Pag. 179.) 
1 a. A small imperfect specimen, preserving the stria and mesial band in a very perfect manner. 
1 b. A specimen with the. stria partially removed, showing the extension of the aperture below. 
1 c. A cast, showing the form of the aperture, which is nearly entire. 
I d. A fragment of a larger specimen, preserving the striae and mesial band. 
1 e. Cast of a large specimen, the lower volution broken off. 
Fig. 2. 234. 11. Mtjrchisonia subfusiformis. (Pag. 180.) 
2 a. View of the back of the spire ; the apex imperfect. 
2 b. View, showing, imperfectly, the form of the aperture. 
2 c. A large imperfect individual of this species. 
Fig. 3. 235. 12. Mtjrchisonia vittata. (Pag- 181.) 
3 a. View of the back of the spire. 3 b. Partial front view, showing a part of the aperture. 
Fig. 4. 236. 13. Mtjrchisonia gracilis. (Pag. 181.) 
4 a. Fragment showing six volutions. 
4 b. Another fragment, showing one of the lower volutions partially covered by the shell. 
4 c. A small fragment, on which the shell is partially preserved. 
Fig. 5. 237. 1. Subtjlites elongata. (Pag. 182.) 
5 a. Imperfect cast of a large specimen, showing a part of the aperture. 
5 b. A specimen preserving a portion of the shell, and showing the great length of the last volution and 
aperture. 
5 c. A fragment preserving the shell, and showing more distinctly the banded suture. 
