IN THE TRIAS OF DEVONSHIRE, 261 
ornament” on one side, similar to that of Labyrinthodon Lavisi (op. 
et loc. cit. pl. xix), probably also of the Labyrinthodon, 4 inches long, 
23 inches high, 2 inches thick in its greatest dimensions. Fragment - 
found loose, and rounded by exposure on the sea-shore. No teeth. 
Bone structure throughout. 
3. Small jawbone of Labyrinthodon (?), with fragments of oper- 
cular bone (?) am situ, in the matrix. There is something like 
remains of teeth on the anterior extremity of the jaw. 
4. Ramus of jaw of Reptile (?), imperfect, with several teeth in 
line, some broken off. 27 inches long, ;4, inch broad at alveolar mar- 
gin; 25 teeth, the largest of which are posterior, about =°,; inch above 
jaw, pointed and suddenly expanded at base, where they are com- 
pressed antero-posteriorly, and about 3 inches by +4, inch in greatest 
diameter, minutely grooved longitudinally from the base upwards, 
and anchylosed to the jaw. Bone structure throughout (fig. 3). 
Fig. 3.—Ramus of Jaw, with tecth, from talus under High Peake 
Hill, (Natural size.) 
5. Fragment of jaw of small animal, bearing three pulps; 14 inch 
long by 2 inch in thickness. Bone structure throughout. 
6. The same with 2 teeth more advanced, showing the layer of 
enamel 3 inch long. Bone structure. 
7. Fragment of (?) hollow bone or tooth. Bone structure 
throughout. 
8&9. Two fragments of jawbone, containing remains of teeth. 
Bone structure throughout. 
10. Fragment of subcutaneous bones of Labyrinthodon(?). Bone 
structure throughout. 
11. A great number of other shapeless fragments, some of which 
appear to have been “scutes,” illustrating both their nature and 
that of the matrix in which they are imbedded. 
12. Fragment of bone from Tidwell-Hstate Quarry. Bone struc- 
ture confined to little opalescent thin plates or scales dispersed 
irregularly through the rest of the chalky substance. 
I should mention that in a geological diagram of the strata 
between High Peake Hill and Sidmouth inclusive, prepared and 
presented to me by Mr. P. O. Hutchinson, a Local Secretary of the 
Society of Antiquaries, the bone-bed is placed considerably lower 
down in the sandstones than the lighter-coloured stratum to which 
I have directed special attention. Mr. Hutchinson has long resided 
at Sidmouth, and observed the geological features of his locality ; 
