XL CETEOSAURUS FOOT-BONES. 287 



the series, possibly on the outside of the left foot, much resembling 

 the megalosaurian bone. It is the proximal end, oblique, expanded 

 horizontally, unequally thick, ridged in the middle of the upper 

 surface, thence sloping inward, concave beneath. Breadth, 5-5 

 inches ; depth, as resting on the lower surface, 3*3 ; the concavity 

 being 0*4. The shank was slender: its breadth, r8; its height, 

 r6. 



The other metatarsal may be in some degree reconstructed from 

 these frusta. It is very much larger, measuring 6 inches in breadth 

 at the proximal end, which is rectangular to the shaft, and 3-5 

 in depth. It appears to be the middle metatarsal of the left foot, 

 and much resembles megalosaurus. The fragment reaches the 

 middle of the shaft (8 inches), which there is about 2,- 7 5 inches 

 broad and 3-35 deep. The surface is concave below the proximal 

 end toward the inner edge. 



Metatarsals, without locality marked on them, but certainly from 

 Glympton, or Chapelhouse near Chipping-Norton, appear in five 

 fragments, four of the proximal ends, one of the distal. They are 

 of opposite feet, two of the left, two of the right; the fifth of 

 uncertain place. They do not correspond to the known types of 

 megalosaurian bones, nor do they better agree with any of those 

 which have been described as ceteosaurian from Enslow Kocks or 

 Chapelhouse. They do not appear hollow in the way bones of 

 megalosaurus appear ; but have a largely cellular interior cylinder 

 within a firm exterior sheath. If the interior had been decomposed, 

 the bone would have presented the appearances usual in megalo- 

 saurus, from which the hollowness of the bones of that animal has 

 been inferred. 



Another set of the bones referred to by Professor Owen presents 

 quite different characters seven in number. On one is a label 

 written, ' Ceteosaurus, metatarsal and phalangal bones of hind foot 

 nine bones.' Probably the two phalangal bones presently to be 

 noticed make up the nine. 



Of these seven fragments of bones, two of the right foot, a 

 distal and a proximal part, belong apparently to that digit marked 

 II. by Owen in his account of iguanodon; another of the same 

 side, nearly complete, to his No. III.; a fourth, proximal, to the 

 same part of the foot, but on the opposite side. Two are not to 

 be determined. The last to be mentioned is peculiar in figure, and, 



