1870.] PROF. W. H. FLOWER ON EZLURUS FULGENS. 75d 
The feet are very broad, and evenly rounded in front. The fol- 
lowing table * shows the relative length of the five digits of each 
foot, measured from a common base-line, the hinder edge of the palm 
or sole, as the case might be, to the tip of each claw :— 
Manus. Pes. 
Tet digit... same erage ra 375" 
Onde %. c.eemete tes a 2°9 4°3 
Brd’ o.,5 anions Ber eee 33 4°6 
AGI (th oe) alee t 2 tytn eens, ol 4:4 
Sth 3, Peete eke oles eta Pug 4°] 
Tue Brain. 
The general form of the brain, and the arrangement of the sulci 
and gyri of the hemispheres, are shown in figs. 1, 2, and 3. The 
length of each cerebral hemisphere was 2°2", and the greatest width 
of the entire brain near the posterior part of the hemispheres 1:8". 
The cerebral capacity, taken from a cast of the interior of the skull, 
was 3 cubic inches. 
Both the form of the hemispheres and the disposition of the gyri 
upon their surface are eminently characteristic of the arctoid group 
of the Carnivora, as pointed out in P. Z.S. 1869, p. 482. They 
resemble very closely those of Procyon. It should be remarked that 
there is a noticeable want of exact bilateral symmetry. 
The sylvian fissure (S) is situated rather behind the middle of the 
side of the hemisphere, and inclines upwards and backwards, being 
nearly *6" long. The internal gyrus (77), which immediately sur- 
rounds it, has the anterior limb munch narrower than the posterior ; 
the angle at which the gyrns is folded on itself above is very acute ; 
the lower part of the posterior limb is broad, and indented by a 
short sulcus descending from the middle of the sylvian fissure, and 
which is not found, or is only slightly indicated, in Ursus, Procyon, 
and Nasua. 
The middle gyrus (m m) is of nearly uniform thickness throughout, 
is marked by a few secondary sulci, and surrounds the internal gyrus 
in the whole of its extent. 
The superior gyrus (ss) is large and complex. Commencing in 
the supraorbital region, close to the root of the olfactory lobe, it 
passes forwards and inwards, and winds round the supraorbital sulcus 
(O); then it bends outwards round the strongly marked crucial 
sulcus (C), behind which it is very broad, and almost divided into 
two by a well-marked longitudinal sulcus. In the middle of the 
hemisphere, above the apex of the sylvian fissure, it is narrower and 
straight. Posteriorly it winds round the middle gyrus, and forms the 
hinder margin of the hemisphere, being distinctly divided from the 
middle gyrus almost as far as the lower border of the temporal lobe. 
On the left side, however, there is a bridging convolution (*) between 
these two gyri, wanting on the right. 
* From notes kindly taken for me by my friend Mr. John C. Galton, M.A. 
