PLATE XXXI. 
Pletjrotomakia Bischoffii, Ooldfuss. (Page 305.) 
Fig. 
1. Specimen showing sinus-band. 1 «, apical view. Lummaton. "Woodwardian Museum. 
ODOifTOMARiA SEMiPLiCATA, Sandberger, sp. (Page 320.) 
2. Specimen showing the broad sinus-band between two similar flat areas. 2 a, lower view. Wol- 
borough. Torquay Museum. 
Belleeophon lineatus, Qoldfuss MS. (Page 321.) 
8. Small typical specimen. 3 a, lateral view. 3 h, portion of surface, x 8. Lummaton. My 
Collection. 
4. Platter specimen with very distant and irregular strise. 4 a, lateral view. Lummaton (?). 
Torquay Museum. 
5. Specimen with very close strise. 5 a, portion of surface, X 7. Lummaton (?). Torquay 
Museum. 
6. Specimen with still closer strife, the minor strise having become as large as the major. 6 a, lateral 
view. 6 h, portion of surface, x 5. Wolborough Museum of Practical Greology. 
Bellerophon Hicksii, n. sp. (Page 326.) 
7. Specimen showing the branching strise. 7 a, lateral view. 7 b, portion of surface, x 4. "Wol- 
borough. Woodwardian Museum. 
8. Large but doubtful specimen, in which the surface is destroyed. 8 a, lateral view. Wolborough. 
Vicary Collection. 
Bellerophon mundus, Whidborne. (Page 327.) 
9. Cast, retaining only a fragment of the shell. 9 a, lateral view, showing the broad median sulcus. 
Lummaton. Lee Collection. 
Belleeophon macromphalus, F. A. Romer. (Page 327.) 
10. Specimen wanting shell. 10 a, lateral view. Chircombe Bridge. Vicary Collection. 
Bellleeophoit impereorattjs, n. sp. (Page 329.) 
11. Specimen showing the thickened and flattened sides of the aperture. 11 a, lateral view. Wol- 
borough. Vicary Collection. 
Porcellia bifida, Sandberger sp. (Page 330.) 
12. Specimen with rather angulated whorls, worn on the back. 12 a, lateral view ; 12 ft, portion ci 
surface, x 3. Lummaton. Museum of Practical G-eology. 
13. Smaller specimen. 13 «, portion of surface, X 6, showing the strise, which are probably 
roughened by fossilisatiou. Lummaton (?). Torquay Museum. 
14. Small specimen showing the divaricating strise. Lummaton (?). Torquay Museum. 
Helminthochiton papilio, Whidborne. (Page 334.) 
15. Worn and distorted specimen. 15 a, lateral view showing the obscure ornament ; 15 h, anterior 
view, showing the thickening of the under side. Wolborough. Museum of Practical G-eology. 
16. Very obscure and doubtful specimen, which may perhaps be a Brachiopod. Lummaton. My 
Collection. 
