Tliecodontosaurus and Palgeosauvus. 



155 



1 inch, chiefly prolonged on the posterior margin. The 

 proximal end has therefore the aspect of being inclined a 

 little backward, and compressed at the articulation. It 



Lateral aspect of the fibula of Palceosaurus. 

 4- nat. size. 



Brist. Mus. no. 42. 



appears to be flattened from side to side, 

 articulation appears to be at right angles 

 distal end. 



No tarsal bones are preserved. 



The proximal 

 to that of the 



The Metatarsus of Pala30sam-us. 



The metatarsus is represented by several bones. No. 79 

 is a left metatarsal 4^ inches long, -i^ inch wide at the distal 

 extremity, and ^ inch wide above the distal articulation. Its 

 proximal end is stout, fully an inch wide, oblique to the 

 distal end, and inclined outward. 



The type specimen is 3^ inches long, y^^ inch wide at the 

 distal end, -j-^j inch wide in the lower third, and lyV inch 

 wide at the proximal end, which, as usual, is concave on the 

 under surface and oblique. No. 83 is a little smaller, the 

 metatarsal being 3 inches long, with the proximal end j% inch 

 wide and y^^r i^^ch deep. These measurements are such that the 

 bones might all belong to one foot, and they are provisionally 

 referred to Palceosaurus. 



