PLATE II. 
Pig- . Page 
1. Myriacanthus paradoxus, Ag.; dentition, anterior and 
oral aspect.—Lower Lias ; Lyme Eegis. md. Mandi¬ 
bular teeth, pi. Palatine tooth, ps. Presymphysial 
tooth, v. T omerine tooth, x. Supplementary upper 
tooth or accidental dismemberment of vomerine tooth. 
[P. 4684.] 47 
2, 2 a, 2 b . Ditto ; dentition, superior aspect, transverse sec¬ 
tion of presymphysial tooth (a), and anterior upper 
tooth (5), the last being twice nat. size.—Ibid. d. 
Dermal plates. Other letters as above. [P. 151.] 48 
3. Ditto; left mandibular tooth, inner aspect.—Ibid. 
[P. 477.] 46 
4, 4 a , 4 b . Myriacanthus granulatus, Ag. ; dentition, ante¬ 
rior and oral aspect, and presymphysial tooth in side 
view (a) and transverse section (5), the last three times 
nat. size.—Ibid. t. Dermal tubercles. Other letters 
as above. [P. 4575.] 49 
