PLATE I. 
Fig. Pago 
1,2. Jmiassa imhricutii ('Sl'Coy) ; two tooth with incomplete 
root, unterior and posterior aspects, and section. — 
U. Carbfs. Linnst. ; Ticknall, Derbyshire. [P. 5339.] 38 
3. JuMixsa elaimla (iI‘Coy) ; tooth, anterior and posterior 
aspects, and section. — U. Carbfs. Lim.st. ; Boith, Ayr- 
shire. [46036.J 38 
4-7. I’etalndm acmninatus (Agassi/.) ; four teeth, anterior 
and posterior aspects. — U. Carbfs. Limst. ; Ticknall, 
Derbyshire. 1 P. 5342.] 43 
8. Petalodus jlahcUnla, s]). nov. ; tooth, posterior aspect. — 
Carbfs. Limst. ; Oreton, Salop. |P. 227 a.] 45 
9. J’etalorhi/Hchus psittaci iiim (M‘Coy), var. minor; tooth, 
anterior and posterior aspects, twice nat. si/o.' — 
U. Carbfs. Limst. ; Ticknall, Derbyshire. | P.5340.] 41 
10-12. C'tenoplycMus lohatus (Etheridge) ; throe teeth, anterior 
and posterior aspects, twice nat. size. — Ibid. 
[P. 5342-3.] 52 
13. Pristudus heruiiei (Etheridge) ; supposed lower tooth, 
anterior aspect and section, showing root. — Ibid. 
[P. 5344 a.] 64 
14, 15. Copodus spatulatus, Davis ; two teeth, upper aspect. — 
Ibid. 
[P. 5362.] 
94 
16, 
1 7. Loidiodng gerrntus, Davis ; 
two teeth, posterior and 
anterior aspects. — Ibid. 
[P. 5345.] 
225 
18, 
19. Megolojdwdus problematicus, 
gen. & sp. nov. : two 
teeth, anterior and posterior aspects. — L. Carbfs. Limst. ; 
Armagh. 
| P. 2641.] 
61 
20. 
Strehlodvs colei, Davis ; dental 
plate, coronal aspect. — 
U. Carbfs. Limst. : Ticknall, Derbyshire. [P. 5349.] 
211 
21. 
Dcltoptiijchins f/ihherulng, Davis ; 
“lower” dental plate. 
coronal aspect. — Ibid. 
| P. 5351.] 
215 
22. 
Xygtrodug striiitng (M‘Coy); “ upper ” dental jdate, coronal 
aspect. — Ibid. 
[P. 5354.] 
194 
23, 
24. Pmdlodug jonesii (JiDCoy) ; 
“ lower ” dental plates. 
coronal aspect. — Ibid. 
|P. 5355.] 
204 
25. 
Ditto ; portion of “ upper ” dental plate, coronal aspect. — 
Ibid. 
1 P. 5356.] 
203 
