0.C. Marsh on new Reptilian remains from Brazil. 391 
three lines in length, along the outer side, and ten lines in di- 
ameter at the base. One edge is somewhat more convex than 
the other, and this is also true of one of the sides, and hence 
the tooth appears slightly curved in two directions. On either 
edge of the crown there is a sharp ridge, most prominent near 
the apex, over which it passes, but gradually disappearing be- 
fore reaching the base, resembling in this respect the teeth of 
acosaurus, from which, however, this specimen differs in 
being longer, and less curved than the teeth of that genus 
usually are. The sides of the crown are covered with fine, in- 
terrupted, undulating striw, which appear to be different from 
the dental sculpture of the Crocodilia hitherto described. These 
strie are most distinct near the middle of the tooth, becoming 
much more delicate at the base, and nearly obliterated at the 
apex, 
In size and general appearance, this specimen resembles 
tapering, and in having the ridge on the edges extend farther 
downward, It resembles still more closely the teeth of a new 
Marsh. Both species have essentially the same proportions, 
and similar dental strie, but the cutting ridge of the New Jer- 
Sey Specimens is more prominent, and extends nearly or quite 
to the base of the crown. The two species were apparent] 
about the same size, both being considerably larger than exist- 
modern proccelian Crocodiles, but in the absence of these, it 
may for the present be placed in the same genus. Its form, 
ded, and it may appropriately be named Crocodilus Hartti, in 
much light on the geology of Brazil. 
Revere} specihicais of ential teeth collected by Mr. Allport 
' at Montserrate, a locality in the same deposit about two miles 
Southwest of Plantaforma station, evidently belong to this spe- 
fies, as the illustrations accompanying his r (Plate xvI, 
gures 1, 
Plate refers 
Cately wrink]. 
