574 DR. J. MURIE ON THE ANATOMY OF THE SEA-LION. 
ao. Antorbital. 
po. Postorbital. 
pf. Postfrontal. 
c. Condyle. 
pmd. Paramastoid. 
h. Hamular (of pterygoid). 
ap. Anterior palatine. 
io. Infraorbital. 
als. Alisphenoid. 
ov. Ovale. 
ca, ca*, Carotid (canal). 
jug. Jugular. 
mae. Meatus auditorius externus. 
mai. Meatus auditorius internus. 
sm. Stylo-mastoid. 
aur. Auricular. 
ac. Anterior condyloid. 
ex. Exoccipital. 
fm. Foramen magnum. 
v. Vascular (bony channels). 
I, T. Incisors. 
C,@. Canines. 
Processes. 
cd. Mandibular condyle. 
co. Coronoid. 
a. Angle of mandible. 
t. Tentorium. 
gl. Glenoideum. 
eth. Ethmoidal spine. 
Foramina. 
ve. Vidian canal. 
2. Optic. 
Ja. Lacerum anterius. 
lm. Lacerum medius. 
sp. Spinosum. 
Zg. Longitudinal (sinus). 
mg. Meningeal groove. 
me. Mental. 
i. Incisive. 
id. Inferior dental. 
Teeth. 
| PM, PM. Premolars. 
M,M Molars. 
pe. Posterior ethmoidal. ~ 
af. Aqueductus Fallopii. 
av. Aqueductus vestibuli. 
‘The upper dotted line in fig. 5 denotes where calvarium was sawn through. Com- 
pare figs. 9 and 10. 
PLATE LXXVII. 
Fig. 11. Skeleton of the Zoological Society's male Sea-lion, sketched in the natural 
attitude of walking, and with dorsum of the sacro-pelvic region slightly 
tured towards the observer. 
Series of skulls of Otaria jubata, illustrating progressive growth, reduced to scale 
one fourth their natural magnitudes :— . 
Fig. 12. Profile of skull, No. 3971 c, College-of-Surgeons Museum. It is one of two 
young Seals’ crania presented by Captain B. J. Sullivan, R.N., in 1844, and 
described by him in a letter as “ about a fortnight old.” 
Fig. 13. Upper view of the same specimen. 
