PLATE III. 
GoNioPHORA OBLiQUA, Whidbome, sp. (Page 16.) 
Fig. 
1. Left valve, showing the lofty keel arching downwards. 1 a, inner view, 
showing the umbo and the hinge. 1 b, oblique view, showing the ornamen- 
tation. (Phillips's figure of his type seems to have been drawn in this 
aspect.) Wolborough. Museum of Practical Geology. 
Protosuhizodus ? TRiGONELLUS, n. sp. (Page 36.) 
2. Right valve, slightly injured on the margins. Lummaton. My Collection. 
NuouLA Protei, Miinster. (Page 37.) 
3. Left valve, showing the ornament. 3 a, upper view. Lummaton. My 
Collection. 
Myalina egregia, n. sp. (Page 46.) 
4. Very perfect specimen retaining the shell, and only injured at the supero- 
posterior corner. 4 a, anterior view. Wolborough. Vicary Collection. 
5. Very large but imperfect specimen, showing the thickness of the shell near 
the umbo. Wolborough. Vicary Collection. 
Myalina Damnonibnsis, Phillips, sp. (Page 47.) 
6 Phillips's type specimen, showing the definite posterior wing. Wolborough. 
Museum of Practical Geology. 
Mytilaeoa (?) RoBERTSii, WJiidbome, sp. (Page 51.) 
7. Specimen showing the narrow posterior wing. 7 a, posterior view, showing 
the shape of the umbones. Wolborough. Vicary Collection. 
Myalina stulta, Wliidborne, sp. (Page 48.) 
8. Right valve, showing the surface- ornament though rather worn. Wol- 
borough. Museum of Practical Geology. 
