FOSSIL REPTILES. 285 



widened part of the inter-maxillary, under which, and behind 

 the teeth, is a projecting apophysis ; and the bone then proceeds 

 to unite itself by a short process, which is furcated and marked 

 with a groove, to the vomerian bones, which occupy the middle 

 of the palate. 



The maxillaries, as usual, form the edges of the palate, 

 leaving on each side between themselves, the vomer, and pala- 

 tines, a wide hinder nostril, which, consequently, opens into the 

 palate. The maxillaries, also, form the sides of the muzzle or 

 the cheeks, and terminate by widening towards the orbit, from 

 which they are separated by the anterior frontal, the lachrymal, 

 and the jugal bones. 



The anterior frontal has, as usual, a frontal and orbital 

 part, which serves as a hinder partition to the nasal cavity. 



The lachrymal is partly on the cheek, and partly in the 

 orbit. It has a projecting point at the edge of the orbit, a 

 lachrymal foramen within, and leaves another hole tolerably 

 large between it and the anterior frontal. 



The jugal touches on the lachrymal, the palatine, and the 

 transverse bones. It is an arched and pointed stilett which 

 does not reach the posterior frontal, nor the temporal bones, 

 so that the orbit remains incomplete. No other example 

 of this is found among the Saurians except in the genus of 

 Gecko. 



There is a particular bone which has nothing analogous in 

 other genera, and which M. Cuvier terms the superciliary bone. It 

 is articulated by a wide portion to the orbital edge of the anterior 

 frontal, and directs behind a pointed apophysis, which protects 

 the upper part of the eye. This is also found in birds. The 

 line of the union of the frontals with the parietals is nearly 

 straight. On the two extremities of this line the posterior 

 frontals are articulated, one half on the principal frontal, and 

 one half on the parietal. Each of them presents an orbital 

 apophysis, and one behind, which unites obliquely to the tem- 

 poral bone to form the zygomatic arch. 



