128 



The anterior orl^ital Ijorder, as constituted by tlie prefrontals and lachry- 

 mals, is depressed or slopes inwardly toward the orbits. 



The nasal process of the frontal is niucli prolonged, extending 2 inches 

 in advance of the position of the ant-orbital margins. The prefrontals are 

 proportionately long and narrow compared with those in the mugger. Their 

 length is about 4 inches ; tlieir breadth, where widest, is 14 lines. 



The nasals are broad and flat at the back part. They are proportionately 

 of greater breadth than in the mugger. Their estimated length is 9i inches; 

 their breadth together in advance of the lachrymals is about 2J inches. 



The fore part of the face, or the muzzle, has the same form as in the mugger 

 and other true crocodiles, but is proportionately less thick than in the one 

 specifically mentioned. The nasal orifice holds a more advanced position 

 than usual, so that the alveolar border in front is barely more than half the 

 extent it is in the mugger, nor is it perforated as in the latter and other true 

 crocodiles. The upper surface of the skull is everywhere exceedingly rugose, 

 with reticular ridges inclosing deep pits, and in some positions is deeply 

 scored by vascular gi'ooves. 



Four teeth occupied the sides of the premaxillaries, forming an unbroken 

 row. The intermediate pair are the larger and of nearly equal size ; the 

 others are also nearly of equal size. The tirst tooth did not occupy the fore 

 part of the premaxillary as usual, in the true crocodiles, but is over an inch 

 from the position of the symphysis, close to the second tooth. A large recess 

 occupies the fore part of the palatine surface of the premaxillary, for the 

 accommodation of the first mandibular tooth, as usual in the crocodiles, but it 

 is closed or does not communicate by a perforation with the upper surface of 

 the premaxillary border. The recess holds a position internal to the first pre- 

 maxillary tooth. Smaller conical recesses occupy the intervals internally of 

 the succeeding three teeth. 



The maxillary appears to have accommodated fourteen or fifteen teeth, of 

 which the fifth one was the largest, as in other crocodiles. The fourth, in 

 comparison with the fifth one, .was proportionately larger than in the mugger, 

 and the sixth was not much less in size. 



The depth of the socket of the fifth maxillary tooth is full 2 inches ; its 

 fore and aft diameter about f inch. The depth of the fourth socket is 20 

 lines : its diameter 8 lines. 



The premaxillary teeth, in comparison w ith those of the mugger, appear to 



