54 Hncephalic Anatomy of the Races 
ment (EOP’, Fig. 11) irregular and ramified, curving around the caudal 
ramus of the paroccipital; another segment (EOP”, Fig. 11) ventrad of 
this, and whose caudal limbs embrace the lateral end of the postealearine. 
Numerous other fissures mark the angular gyre and occipito-parietal 
transition. 
MESIAL SURFACE.—The precuneal fissure, as in the same half of 
“ Atana’s ”’ cerebrum, presents a vertical zygon. One of its dorsal limbs 
anastomoses slightly with the paracentral. The cuneal fissure is zygal 
ane resembles very much that of the other half of this cerebrum. The 
same can be said of the postcuneal. 
> 
GYRES OF THE PARIETAL AND OCCIPITAL LOBES (LATERAL SURFACE).—The 
postcentral gyre is quite narrow, especially in its dorsal portion. The 
parietal gyre is short, but broad and richly fissured. The paroccipital 
gyre is of irregular contour, its caudal arm being many times larger 
than its cephalic portion. 
The marginal and angular gyres present a notable complexity as well 
as considerable extent of surface. The latter is of especial broadness. 
MESIAL SuRFACE.—The precuneus is rather better developed than its 
fellow on the left half. The cuneus of this hemicerebrum bears a strik- 
ing resemblance to that of the other side. The disposition of its intrinsic 
fissures is practically the very same as in the left cuneus. 
The callosal gyre throughout is more fissured than on the left. 
FISSURES OF THE TEMPORAL LOBE (LATERO-VENTRAL SURFACE).—The super- 
temporal fissure, like that of the left side, runs a very irregular and 
atypical course. There is a cephalic smaller, tri-radiate segment, and a 
larger, tortuous caudal piece whose length is 8.5 em. To understand its 
appearance, the reader must refer to Figure 11. The dorsal end of the 
fissure is fureal; from here it sweeps ventro-cephalad, sending one ramus 
into the supertemporal gyre, another across the angular gyre toe anasto- 
mose over a vaduim with the exoccipital. The fissure proceeds well ven- 
trad, then turns sharply to pass cephalad, and divides into two rami, one 
closely approaching the sylvian, the other passing just a little ventrad of 
the cephalic supertemporal segment. 
The meditemporal is represented by three segments, the middle one 
of which is quite long and anastomoses with the collateral fissure far 
caudad. 
The subtemporal is represented by two irregular and much-ramified 
pieces. The collateral is 11.5 em. in length and is well-curved. The post- 
rhinal (amygdaline) fissure is slightly indicated. 
GYRES OF THE TEMPORAL LOBE (LATERO-VENTRAL SURFACE).—The super- 
temporal gyre is particularly massive and very broad, especially in its 
middle portion, owing to the wide ventral sweep in the course of the 
supertemporal fissure. The meditemporal and subtemporal gyres are 
well developed. The subcollateral is comparatively simple. The sub- 
‘alearine is narrow in its middle portion but unusually broad and richly 
fissured caudally. 
THE InsULA.—The insula resembles that of the left side. There is a 
broad postinsular gyre, and four smaller preinsular gyres. In general it 
is less developed and smaller than its fellow. 
