ANGISTORHINUS, A NEW GENUS OF PHYTOSAURIA | 1g1 
of this rostrum, four on each side. On the right side three of 
these are preserved. The first, the posterior one of these, reaches 
a length of 69 mm. The second is missing. In the downward 
extension the lateral tooth is 78 mm. long and the inner one, 
probably a young tooth, is about 35 mm. long. 
The anterior end of the mandible is expanded in a horizontal 
plane, while in that of A. grandis the sides of the anterior expansion 
are turned up, thus forming a deep, rounded groove along the 
median line. The terminal expansion in each form bears three 
large teeth with approximately circular section. Immediately 
back of these large terminal teeth the diameter of the teeth in A. 
grandis is from 7 mm. to 9 mm., while in the second specimen the 
diameter is from 5 mm. to 7 mm. In much probability further 
study will show that the skulls belong to two different species. 
