MR. J. W. HULKE ON THE OSTEOLOGY 
The orbit. 
The upper temporal bar. 
The lower temporal bar. 
The squamosal bone. 
The parotic process. 
The foramen magnum. 
The occipital condyle. 
The quadrate bone. 
The mandible. 
Fig. 1 . An oblique view of a skull of an adult Hypsilophodon. It represents the 
upper surface and the right side of the brain-case, and the palatal 
aspect of the snout which, wanting the mandible, has separated from 
the hind part of the cranium in front of the orbits, and is twisted on its 
long axis and laterally displaced.**'* 
Fig. 2 . Oblique view of the upper surface and the right side of a skull of a smaller 
individual.** 
Fig. 3. A posterior view of the same skull.** (From a sketch by the author before 
the occipital condyle was mutilated.) 
Fig. 4. Oblique postero-inferior view of the left mandible with the quadrate, and a 
piece of the lower temporal bar attached to the latter. 
1058 
orb. 
utb. 
Itb. 
sq. 
popr, 
fm. 
oc. 
qu. 
mn. 
PLATE 72. 
Fig. 1 . Inner view of lateral parts of a skull (much abraded) in which the quadrate 
bone preserves its normal relations.** 
qu. The quadrate bone. 
sq. The squamosal bone. 
mn. The mandibular. 
Fig. 2 . Inner view of the anterior part of a left mandibular ramus.** 
ed.sp. Marks the edentulous symphysial spout. 
sy. The symphysis. 
Fig. 3. Outer view of a premaxillary tooth.*** 
Fig. 4. Side view of the same.*** 
Fig. 5. Two worn teeth from near the front of the maxilla with the crown of a 
successional tooth.*** 
Fig. 6 . An unworn tooth from near front of the maxilla.*** 
Fig. 7. A crown of a larger maxillary tooth, posterior in position to figs. 5 and 6.*** 
Fig. 8. Side view of the same.*** 
Fig. 9. A large nearly perfect maxillary tooth.*** 
(The mark I indicates the actual length of the teeth.) 
