LOWER LIAS. 
Ungual Phalanx. Tab. II, figs. 4, 5, 6. 
The ungual phalan.x transmitted with the foregoing leg-bones, from the 
collection of Henry Norris, Esq., F.R.C.S., is somewhat intermediate in its 
proportions between that of the hind foot of the Megalosaurus and that of 
the hind foot of the Iguanodon ; it is less compressed than the former, less 
depressed and flattened than in the latter. On one side of the base, near the 
articular surface, it is impressed by a shallow, vertical canal (fig. 6, g), extending 
from the upper to the lower part of the bone. A median, low and broad, 
vertical prominence extends from the upper half of the articular facet (fig, 5, 6), 
giving a sub-crescentic figure to the cavity of the joint ; the lower border 
is straight to near the apex, which is slightly bent down (fig. 4). There are no 
indications of lateral grooves and foramina for blood-vessels. 
Bones of a you7ig Scelidosaur. Tab. III. 
Subsequently to the exposure and acquisition of the foregoing fossils an intel- 
ligent quarry-man discovered, in the same member of the lower Lias, a collection 
of small bones, of a delicate, friable texture, of which those comprised in Tab. Ill 
were brought to Mr. Harrison, by whom they were kindly transmitted to me for 
description. The collection included the centrum or body of a vertebra (figs. 1 — 4), 
a left femur (figs. 5, 6), a considerable portion of a tibia (fig. 1 ), and fibula 
(figs. 8 and 9), a tarsal bone (fig. 15), a metatarsal (figs. 10 and 11), and a proximal 
phalanx (figs. 12 — 14). The long bones were much crushed, especially the femur. 
This bone, therefore, appears to be thicker than it really was, being almost flat- 
tened. The articular ends have been in a fibrous, unossified state, so that they 
appear flatter or less prominent than they were in the recent bone. The external 
trochanter (e) seems entire, and has not risen higher in relation to the head of the 
bone than is shown in fig. 5. The internal process {t) is similarly well pre- 
served, repeating the character of the herbivorous Dinosauria which is exemplified 
in the Iguanodon. The outer condyle of the femur is longitudinally grooved for 
the fibula. The medullary or unossified cavity of the shaft of the bone has been 
more considerable, in relation to the compact shaft, than in the large femora pre- 
viously described. 
From the foregoing characters it may be concluded that the present femur 
has belonged to a Dinosaur, allied to the Iguanodon, and to a very young indi- 
vidual, and it most probably formed part of a very young or foetal Scelidosaur. 
Fig. 7, Tab. Ill, is a crushed tibia, with the upper end much produced for- 
ward and bilobed behind, as in that of the Scelidosaur, the lower end is wanting. 
