SUPPLEMENT, PLATE XVIII. 



Fig. 



1 — 7. Terebratula Stephani, Dav. Inferior Oolite. 1. Bradford Abbas. Collection 



of Mr. J. F. Walker. 2, 3. Same locality. Collection of 

 Mr. Darell Stephens. 4, 5. Broadwinsor. 6, 7. Brad- 

 ford Abbas. Collection of Prof. Buckman. (P. 147.) 



8 — 9. „ Infra- Oolitica, E. Desl. Am. Jurensis zone, Upper Lias or 



Passage Bed, Frocester Hill, Gloucestershire. (P. 145.) 



10 — 13. „ perovalis, Sow. A small variety. Gryphea Grit, Inferior Oolite, 



Leckhampton Hill, Cheltenham. Collection of Mr. 

 J. F. Walker. (P. 122.) 



14. „ intermedia, Sow., var. Langtonensis, Walker. Cornbrash, Langton 



Herring, near Weymouth. Collection of Mr. J. F. 

 Walker. (P. 156.) 



15. „ sp/iceroidalis, var. ? Oolitic Marl, Inferior Oolite, Crickley Hill, 



Gloucestershire. Seems intermediate in shape between 

 T. spAaroidalis and T. fimbria. 



