180 PETRIFACTIONS AND THEIR TEACHINGS. CHAP. III. 



place, but detached, and the bones dislocated ; those of the 

 right foot are in natural connection, but altogether separated 

 from the trunk, and lying above the lower jaw, according to 

 the present position of the fossil in Case B. The length of 

 the femur is double that of the tibia. The number of fingers 

 and toes accord with those of the Crocodile. There are 

 many dermal scutes scattered among the bones ; the median 

 dorsal ones are carinated; in one part there are twenty-six in 

 natural apposition ; the original must have been covered 

 by a strong flexible scaly integument. In this small rep- 

 tile, and in the remains of the large Swanage Goniopholis, 

 we have instructive examples of the modification of cro- 

 codilian structure which so largely prevailed during the 

 Wealolen and Oolitic ages. 



Teleosaurus Chapmanni. Wall-case B. 1 "The head and 

 other parts of the skeleton of a Gavial from the Lias at 

 Whitby, which, though correctly determined by its discoverer, 

 Capt. W. Chapman, and also by Wooller, (Philosophical 

 Transactions for 1758,) was subsequently mistaken for an 

 I chthy osaurus. ' ' 2 



The fine specimen in the lower compartment of Case , 

 appears to be the one above specified. It consists of a slab 

 of Lias limestone, on which are imbedded the cranium and 

 mandibles attached to a part of the vertebral column, with 

 many ribs and dermal bones. The skull and jaws are between 

 three and four feet in length. The head is retroverted, so 

 that the under surface of the lower jaw is exposed. 



In the upper part of the same Case there is a specimen of 



1 The following is the arrangement of the Teleosauri in this part of 

 Wall-case B : 



Uppermost. Teleosaurus Chapmanni, 9 feet long. 



Shelf. Several portions of crania and jaws. Vertebra and dermal bones 

 of Teleosauri. 



Teleosaurus Chapmanni.-(Philos. Trans, for 1758.) | Cast of Teleosaurus 



| cadomensis, 



On the bottom. Portions of gigantic jaws with teeth of Gavials from the 

 Eocene strata of the Sewalik Hills. Presented by 

 G. H. Smith, Esq. 



2 " Synopsis of the British Museum ;" p. 89. 



