PLATE VII. 



GoNiATiTES NUCiFORMis, Whidbomft. (Page 77.) 

 Fig. 



1. Front view of a middle-sized specimen with a very dilate mouth ; 1 a, side 



view. Wolborough. Vicary Collection. 



GrONiATiTES PENTANGULARis, WJiidbome. (Page 79.) 



2. Fragmentary specimen showing the ornamentation on the outer and inner 



whorls (enlarged two diameters) ; 2 a, front view. Barton. Lee Collection. 

 Twice natural size. 



Temnocheilus inornatus, Whidhorne. (Page 80.) 



3. Specimen wanting the external shell and showing the septa ; 3 a, front view. 



Wolborough. Museum of Practical Geology. 



PoTERiocERAS Marri, Whidbome. (Page 114.) 



4. Ventral view of a nearly perfect shell wanting external test, and showing septa 



and longitudinal markings ; 4 a, lateral view ; 4 b, apical view. Wolborough. 

 Vicary Collection. 



PoTERiooEEAS vAsiFORME, Whidbome. (Page 113.) 



5. Dorsal view of specimen retaining external shell ; 6 a, lateral view, showing 



the fragment of a broken chamber below, proving their extreme narrowness ; 

 5 b, upper view. Wolborough. Torquay Museum. 



