xliii 
LIST OF WOODCUTS. 
I <r . 
1. Acaiithodcs wartli. Restoration . 
2. -bronni. Pectoral jin . 
2. Pipiaeanthus striatus. Pectoral arch and Jins . 
4. Parexus falcatus. Pectoral arch and Jin . 
5. Ptvetodus obliqims, Tooth . 
6. Palatine teeth of Chimaeridse. Diagrams of the oral 
aspect . 
7. Mandibular teeth of Chinueridsc. Diagrams of the 
inner aspect .. 
8. Edaphodon le-ptognathus. Mandibular tooth . 
9. Lepracant-hus colei. Dorsal Jin-spine . 
10. Gyracanthus formosus. Fin-spine . 
11. Harpacanthus fimbriatus. Spine . 
12. Edestus minor. Portion of spine . 
13. Euctenius unilateralis. Spines . 
14. Pteraspis rostrata. Dorsal shield . 
15. -rostrata. Restoration . 
16. -erouehi. Portion of dorsal shield . 
17. Cyathaspis. Outline of dorsal shield . 
18. Cephalaspis lyelli. Outline of dorsal shield, 
19. Cephalaspis. Inferior aspect of dorsal shield . 
20. Cephalaspis. Transverse section, of dorsal skidd . 
21. Cephalaspis lyelli. Restoration . .. 
22. -powriei. Outline of dorsal shield . 
23. --- pagei. Outline and superficial ornamentation 
of dorsal shield . 
24. -murchisoni. Restoration . 
25. - murchisoni. Outline and superficial ornamen¬ 
tation of dorsal shield . 
26. -dawsoni. Dorsal aspect , and portion of super¬ 
ficial ornamentation . 
Pa r/ o 
o 
o 
4 
23 
35 
38 
54 
82 
115 
142 
151 
152 
160 
161 
168 
171 
177 
178 
179 
180 
183 
184 
185 
J 86 
192 
