PLATE VI. 



GoNiATiTES HuGHESir, Wlvidhome. (Page 69.) 

 Fig. 



1. The largest specimen known ; 1 a, front view. Lummaton. My Collection. 



2. Specimen showing suture-lines under the external shell; 2 a, suture-line. 



Lummaton. Lee Collection, British Museum. 



3. Rear view of another specimen ; 3 a, portion of surface magnified. Lum- 



maton. Lee Collection, British Museum. 



GoNiATiTES MOLARius, n. sp. (Page 64.) 



4. Specimen showing suture-lines ; 4 a, suture-line. Wolborough. British 



Museum. 



6. Young specimen ; 6 a, front view. Wolborough. Torquay Museum. 



GrONiATiTBS GLOBOSus, Mwuster ? (Page 67.) 



5. Specimenwithsmall umbilicus; 5a,front view. Wolborough. Torquay Museum. 



GoNiATiTES NuoiFORMis, Whidhome. (Page 77.) 



7 . The largest specimen known, wanting body-chamber ; 7 a, front view ; 7 &, 



suture-line. Wolborough. Vicary Collection. 



GoNiATiTES TRANSiToRius, PMlUps. (Page 61.) 



8. Specimen wanting body-chamber; 8 a, front view. Wolborough. Museum 



of Practical Geology. 



GoNiATiTES PSiTTACiNus, Whidbovne. (Page 72.) 



9. Specimen without ezternal shell ; 9 a, suture-line. Wolborough. Vicary 



Collection. 



10. Largest specimen known, retaining shell ; 10 a, front view. Wolborough. 



Vicary Collection. 



11. Specimen retaining external shell. Wolborough. Vicary Collection. 



12. 13. Specimens showing various positions of the aperture and proving the 



umbilicus to be closed only by the external shell; 12a (printed 12 on the 

 Plate in error), 13a, front views showing suture-lines; 12 b, 13 6, suture- 

 lines. Wolborough. Vicary Collection. 



GoNiATiTES, sp. (Page 75.) 



14. Specimen wanting body-chamber ; 14 a, line of the lower part of the chamber- 



wall; 14 6, suture-line. Wolborough. Museum of Practical Geology. 



GoNiATiTES, sp. (Page 76.) 



15. Specimen wanting body-chamber; 15 a, probable contour of suture-line. 



Wolborough. Museum of Practical Geology. 



GoNiATiTEs ARATUS, Whidbome. (Page QQ.) 



16. Specimen showing falcated sulci; 16 a, front view. Lummaton. Lee Col- 



lection, British Museum. 



GoNiATiTEs GiRCDMPLEXiFBE ? Sandbevger. (Page 71.) 



17. Specimen showing depressed centre. Barton. British Museum. 



