PLATE I. 



Fish Remains. (Page 1.) 

 Fig. 



1. Fragment of bone, nat. size ; a, another fragment, enlarged. My Collection. 



Lummaton. 



Phacops batrachbus, Whidbome. (Page 2.) 



2, 3. Pygidia. Lummaton. My Collection. 



5. Head ; preserving outer layer of test ; 5 a, profile ; 5 b, eye, enlarged. Lum- 

 maton. My Collection. 



4, 6. Other specimens, partially retaining test ; 4 a and 6 a, side views. Lum- 

 maton. My Collection. 



7. Another specimen, without test ; 7 a, side view. Lummaton. My Collection. 



Phacops latifrons, Bronn. (Page 6.) 



8. Head, wanting test ; figured by Salter as Ph. cryptophthalmus ; 8 a, side view. 



Wolborough. Museum of Practical Geology. 



9. Head, wanting test. Perhaps from Wolborough. Torquay Museum. 



Cheirttrus Pengellii, Whidbome. (Page 8.) 



10. Head, with free cheeks. Lummaton. Torquay Museum. 



11. Head, with cheek-spines (one restored) ; 11 a, side view. Lummaton. Wood- 



wardian Museum. 



12. Head. Wolborough. Vicary Collection. 



13. Tail. Lummaton. Woodwardian Museum. 



15, 16. Hypostomes (slightly restored). Lummaton. My Collection. 



Cheirurus Sternbergii (Boech.) ? (Page 11.) 



14. Portion of glabella ; 14 a, side view. Lummaton. My Collection. 



Aoidaspis Robertsii, Whidbome. (Page 12.) 



17. Head, wanting test (right hand spine restored) ; 17 a, side view. Lummaton. 



Woodwardian Museum. 



Acidaspis pilata, Whidbome. (Page 13.) 



18. Pygidium. Lummaton. My Collection. 



Lichas devonianus, Whidbome. (Page 15.) 



19. Head, preserving test. Eyes and one cheek partially restored ; 19 a, front 



view ; 19 b, profile. Lummaton. My Collection. 



Cyphaspis ocellata, Whidbome. (Page 17.) 



20. Head, retaining test ; 20 a, profile slightly distorted ; 20 b, magnified portion 



of the border. Lummaton. My Collection. 



21. Head of another specimen, wanting test, one cheek-spine restored. Lummaton. 



My Collection. 



22. Magnified portion of the border of another specimen. Lummaton. My 



Collection. 



Proetus batillus, Whidbome. (Page 20.) 



23. Head and portion of first thoracic segment, a, border enlarged. Lummaton. 



Champernowrie Collection. 



24. Head of another specimen ; 24 a, side view. Lummaton. Champernowne 



Collection. 



25. Glabella of another specimen, preserving test ; a, border enlarged. Lummaton. 



My Collection. 



26. Head of a rather small specimen. Lummaton. My Collection. 



