FOSSIL REPTILES. 319 



series of five vertebrae, a large flat bone which appeared to be 

 a coracoid, and some other bones less determinable, a part of 

 which appear to have been rolled and worn by rubbing. Un- 

 fortunately, they were not found together, nor, with the excep- 

 tion of the vertebrae, even by two and two, or three and three, 

 so as to render it probable that they proceeded from the same 

 individual ; and, in fact, it is only from their zoological rela- 

 tions, and their existence in the same locality, that it can be 

 concluded that they came from one species. It must be added 

 that these zoological relations are by no means very unequi- 

 vocal. 



The teeth much resemble those of the animal last described, 

 being compressed, sharp, and hooked backwards, with two 

 edges finely denticulated. Their anterior edge is not so thick, 

 and the denticulations there seem to have been worn more 

 quickly. It appears that they sprung from alveoli well cleared, 

 and that the germs which should replace them pierced the jaw 

 at the internal side of the teeth in place, and in distinct alveoh. 

 These teeth had no adherence to the jaw, which would approxi- 

 mate them to those of the crocodile, but the external edge of 

 the jaw rises nearly an inch higher than the internal, and thus 

 forms a sort of parapet for the teeth on the external side. This 

 is a character of the monitor. 



The external face has some rugose foramina for the issue of 

 the threads of the lower maxillary nerve. The portion pre- 

 served of this jaw exhibits no curve in its length, which seems 

 to indicate that the muzzle was straight and elongated. 



The most remarkable of these bones was that supposed to 

 be a coracoid. It is flat ; a little concave at one face, a little 

 convex at the other. More slender towards its arched edge, 

 and especially at its thickest apophysis. One of its edges is, 

 as we said, in an arc a little curved. The opposite edge is 

 strongly emarginated in its middle. On one side the bone is 

 terminated in a point, and on the other it is, as it were, trun- 



