PLATE VI. 
Fig. Page 
1. Pleuracanthus decheni (Goldfuss), extremity of dorsal spine, 
twice nat. size.—L. Permian ; Buppersdorf, Bohemia. 
[35015.] 4 
2-4. Diplodus tenuis , sp. nov. ; three teeth, anterior, posterior, 
and imperfect lateral aspects, twice nat. size.—Coal- 
Ateas. ; Carluke, Lanarkshire. [P. 3026, 20895.] 11 
5, 6. Diplodus parvulus, Traquair; two teeth, anterior aspect, 
twice nat. size.—M. Carbfs. Limst.; Borough Lee, near 
Edinburgh. [P. 4495.] 12 
7-9. Dicentrodus bicuspidatus ; three teeth, fig. 7 nat. size, 
figs. 8, 9 twice nat. size.—Ibid. [P. 2295, P.4496.] 26 
10, 11. Pleuroplacc attheyi (W. J. Barkas); two dental plates, 
coronal aspect.—Coal-AIeas. ; Carluke. [21423.] 175 
12. PsepJiodus (?) dubius, sp. nov.; “ upper ” dental plate, 
coronal aspect.—Carbfs. Limst.; Oreton, Shropshire. 
[P. 227 b.] 183 
13. PsepJiodus dubius , sp. nov. ; “ lower ” dental plate, coronal 
aspect.—Ibid. [P. 4209.] 183 
13 a. Ditto ; “ lower ” dental plate, profile outline.—Ibid. 
[P. 227 d.] 183 
14. PsepJiodus salopiensis, sp. nov.; “ upper ” dental plate, coronal 
aspect.—Ibid. [42189.] 182 
15. Ditto : “ lower ” dental plate, coronal aspect.—Ibid. 
[42230.] 182 
16. PsepJiodus Icevissimus (Agassiz) ; “ upper ” dental plate, 
coronal aspect.—L. Limst. Shales; Avon Gorge, near 
Bristol. [P. 1434 a.] 181 
17. PsepJiodus, sp. ; dental plate, coronal aspect.—L. Carbfs. 
Limst.; Hook Point, Wexford. [23712.] 184 
18. PsepJiodus, sp. ; dental plate, coronal aspect.—Carbfs. 
Limst.; Oreton. [P. 227 c.] 184 
19. Deltodus gibbus, sp. nov. ; “lower” dental plate, coronal 
aspect.—L. Carbfs. Limst.; Bristol. [20575 b.] 197 
20. Ditto; “ lower ” dental plate, antero-lateral aspect.—Ibid. 
[P. 5859.] 197 
21. Deltodus rugosus , sp. nov.; “ upper ” dental plate, coronal 
aspect, twice nat. size.—C. Limst.; Oreton. [42186.] 198 
22. Ditto; “lower” dental plate, coronal aspect, twice nat. 
size.—Ibid. [36193.] 198 
23. Poecilodus gibbosus , Davis ; “ lower ” dental plate, coronal 
aspect.—L. Carbfs. Limst.; Callooney, Sligo. 
[P. 2465.] 204 
24. CocJiliodus contortus, Agassiz ; posterior dental plate, 
coronal aspect.—Yoredale Bocks ; Wensleydale, York¬ 
shire. [P. 4904.] 207 
25. Streblodus (?) colei, Davis; dental plate, coronal aspect.— 
Ibid. [P. 4905.] 211 
26. Oyrtonodus Jiornei, sp. nov.; dental plate, coronal aspect. 
" —Ibid. [P. 4908.] 217 
27. Diplacoclus bulboides, Davis ; dental plate, coronal aspect. 
—Ibid. [P. 4913.] 216 
28. “ Venustodus ,” sp. ; tooth, outer aspect.—L. Carbfs. Limst.; 
Armagh. [P. 2628 a.] 2Sf5 
