SUPPLEMENT, PLATE XXIII. 



Fig. 



1 — 4. Waldheimia Lechenbyi, Walker, MS. Inferior Oolite, Leckhampton Hill, 



near Cheltenham. Collection of author. (P. 183.) 



5 — 7. „ emarginata, Sow. 5, 6. Inferior Oolite, Broadwinsor. Collection 



of Mr. J. F. Walker. 7. A remarkably thickened 

 example with very flat dorsal valve. Inferior Oolite, 

 Bradford Abbas. Collection of Mr. D. Stephens. 

 (P. 161.) 



8. ,, Waltoni, Dav. A remarkable example, with almost flat dorsal 



valve. Inferior Oolite, Broadwinsor. Collection of 

 Mr. J. P. Walker. (P. 161.) 



9, 10. ,, ,, A variety from the B. cpiocephala or passage bed 



between the Upper Lias and Inferior Oolite proper, 

 Haresfield, Gloucestershire. Collection of Mr. J. F. 

 Walker. (P. 161.) 



11. ,, floretta, d'Orb. A. spinatus zone, Middle Lias, Eston, York- 



shire. Collection of author. (P. 178.) 



12, 13. ,, „ var. pyriformis, Tate. Middle Lias. 12. Cleveland, 



Yorkshire. Collection of Mr. Walker. 13. Shales 

 below Marlstone, Eston, Yorkshire. Collection of 

 Professor Tate. (P. 178.) 



14, 15. „ carinata, Sow. 14. Inferior Oolite, Bradford Abbas. 15. 



Broadwinsor. Collection of Professor Buckman. 

 (P. 179.) 



16 — 18. „ „ var. Mandelslohi, Oppel (= T. alveata, Quenstedt). 16. 



Inferior Oolite, Bradford Abbas. Collection of 

 Professor Buckman. 17. Lower Trigonia Grit 

 (Inferior Oolite), Leckhampton Hill. Collection of 

 Mr. Walker. 18. Inferior Oolite, Crickley Hill, near 

 Cheltenham. Collection of Mr. Walker. (P. 180.) 



19, 20. „ „ var. Blakei, Walker. From blocks of Shelly Dogger 



(Inferior Oolite) belonging to the Yellow Sands, 

 Cliffs near Scarborough, Yorkshire. Collection of 

 author. (P. 181.) 



21,22. „ „ small var. of Mandelslold? Not found larger than fig. 21. 



Inferior Oolite, Bradford Abbas. Collections of 

 Mr. D. Stephens and Mr. J. F. Walker. (P. 181.) 



23 — 26. „ anglica, Oppel. Inferior Oolite from Bradford Abbas and Crew- 



kerne Station, near Sherborne, Dorsetshire. Collec- 

 tion of Mr. D. Stephens. (Pp. 135 and 186.) 



