124 
Si AE GEES, 
hand and the enlargement of that in the European 
form. The resemblance to Mystriosuchus plani- 
rostris in this respect is much closer, but there are 
on the other hand some very marked divergences 
which separate the two individuals rather widely, as 
may be seen by a comparison of the illustrations of 
Mystriosuchus as given by McGregor in his paper 
on the Phytosauria. See bibliography and illustra- 
tions accompanying this paper. 
The upper line of the snout is almost straight 
along most of its length, except where it rises to 
unite with the skull and also in the anterior region 
where there is a slight convexity just behind the 
deflected portion. 
Within the line of the dental alveoli is a strong 
rounded ridge which probably meets 
a corresponding ridge on the mandi- 
ble, as is stated by McGregor to 
be the case in Mystriosuchus, and 
thus prevented too forcible meeting 
of- the. teeth.’ These latter “must 
have pointed obliquely outward. 
The lateral bones of the skull 
\ are slightly roughened by irregular 
pittings and rugosities. This feature 
becomes more marked on the bones 
of the roof, especially on the frontals, 
where, between the anterior portions 
of the orbits, is a small area of very 
notable rugosity. Just anterior to 
this area the frontals are sculptured 
by narrow longitudinal ridges and 
furrows about one-eighth inch in 
width and one-half as deep, and 
with lengths up to one inch or more. 
Ang 
The region between the antorbital 
“ii vacuities is again roughened by 
oa 
Fic. 3.—Skull of Paleorhinus bransont, small irregular tubercles and the 
from the side. 
