360 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXV. 



graphs of both sides of it and to figure and describe as accurately as 

 possible the lower jaw and the palatopterygoid region. Four text 

 figures, two being reproductions of retouched photographs, are fur- 



Fig. 1. — Ceratosaurus nasicornis. X5 + . Right side of skill. Ton explanation 



OF NUMERALS SEE FIG. 2. 



nished. Fig. 1, drawn to scale, shows the most important parts of 

 the left side of the skull. It is intended to illustrate especially the 

 structures forming the roof of the mouth. 



COSAl KI'S NASI 



+ 



Pig. 2. Skull seen from the left side. In this figure the numeral 25 stands 

 on till: matrix which fills the cavity of the prefrontal hone. the outer wall of 

 which has been broken away. 'i'm; upper ',',7 is tlaced on the right vomer; the 



I PPER 28 on THE RIGHT PTERYGOID. 



