DR. J. MURIE ON THE ANATOMY OF THE SEA-LION. 577 
Fig. 41. Reduced sketch of a posterior segment of the inner face of the right cerebrum, 
designed to show the hippocampal sulci. 
Fig. 42. An outline representing the same Sea-lion’s brain, as seen in front or fore- 
shortened. Taken from a cast of the interior cavity of the skull, with the 
dura mater in place. 
Fig. 43. Posterior or occipital view of same. 
Both very much reduced. 
The same lettering corresponds in all the figures of this Plate. 
Cerebral Lobes. 
F. Frontal. T. Temporal. 
P. Parietal. O. Occipital. 
Convolutions. 
IO. Internal orbital. 
MO. Mid orbital. 
EO. External orbital. 
IF. Inferofrontal. 
MF. Mid frontal. 
SF. Superofrontal. 
Cr. Crucial. 
AP. Anteroparietal (=premier pli ascen- 
dant). 
PP. Posteroparietal (=second pli ascen- 
dant). 
SM. Supramarginal. 
Ang. Angular. 
AT. Anterotemporal (=inframarginal). 
M.T. Mid temporal. 
PT. Posttemporal. 
Oc. Occipital (inferior). 
Lob‘. Lobule of anteroparietal. 
Lob’. Lobule of postparietal. 
Lob’. Lobule of supramarginal. 
Lob*. Lobule of angular. 
Lob’. Lobule of posttemporal. 
Lob’. Lobule of internal occipital. 
* Fold connecting internal occipital with 
quadrilateral lobule. 
Ma. Great marginal. 
Ca. Callosal. 
Cl. Callosal lobule. 
Ql. Quadrilateral. 
U. Uncinate. 
Fissures and Sulct. 
to. Intorbital. 
mo. Mid orbital. 
eo. Extorbital. 
es. Crucial. 
ap. Anteroparietal. 
ro. Rolando. 
ipa. Intraparietal. 
sy’. Sylvian (antero-vertical). 
sy’. Sylvian (postoblique). 
at. Anterior temporal (=parallel). 
mt. Mid temporal. 
ot. Occipito-temporal (=posttemporal). 
ep. External perpendicular (faint line 
pointing to front one). 
ip. Internal perpendicular. 
em. Calloso-marginal. 
co. Colateral. 
cale, Calcarine. 
dent. Dentate. 
