DE. GUNTHEE ON THE ANATOMY OE HATTEEIA. 
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Explanation op Figures. 
PLATE XXVI. 
Figs. 1-7. Skull. In fig. 3 the temporal and zygomatic arches are removed to show the 
side of the base of the skull. 
a. Exoccipital, 
b. Alisphenoid. 
c. Stapes. 
d. Paroccipital. 
e. Posterior hypapophysis of basisphenoid. 
f. Anterior hypapophysis of basisphenoid. 
g. Parietal. 
h. Mastoid. 
i. Prefrontal. 
k. Lacrymal. 
l. Postfrontal. 
m. Os quadrato-jugale of Stannius. 
Figs. 8-15. Dentition. 
Fig. 8. Front view of the intermaxillary teeth of a very old example. 
Fig. 9. The same of an example of less age, or of one in which the teeth had not been 
used for some time. 
Fig. 10. Front view of the intermaxillary teeth of a young example. 
Fig. 11. Lateral view of the dentition of the same example. 
Fig. 12. Lateral view of the dentition of an adult TJromastyx hardwickii. 
Fig. 13. Front view of the same. i. Intermaxillary, n. Nasal opening, m. Dental 
process of mandible. 
Fig. 14. Front view of the anterior teeth of a young TJromastyx hardwickii. 
Fig. 15. Front view of the anterior teeth of an adult TJromastyx spinijpes. 
Fig. 16. Tongue and trachea, the latter slit open behind the larynx. 
a. Anterior cartilage. 
b. Posterior cartilage ; b\ its tuberosity for insertion of the dilatator-muscle. 
c. Musculus dilatator glottidis. 
PLATE XXVII. 
Fig. 17. First nine vertebrae. Development of hsemapophysis into uncinate process. 
a. Sternum with lateral slit for articulation with coracoid. 
b. Episternum. 
c. Clavicle. 
d. Hsemapophysis of first sternal rib. 
e . d . Hypapophyses. 
MDCCCLXVH. 4 Q 
n. Zygomatic. 
o. Os quadratum. 
]). Columella. 
q. Vomer. 
r. Pterygoid. 
s. Palatine. 
t. Ectopterygoid. 
u. Dentary. 
v. Splenial. 
w. Articular. 
x. Coronoid. 
