164 Bulletin American Museum of Natural History. [Vol. XI I^ 



Fig. 3. Right Hind Limb of Carnivorous Dinosaur, 

 No. 290. Oblique internal view, t^b "*'• size. 



The tibia forms the en- 

 tire back portion of the 

 ankle joint, the fibula 

 lying in front of it ; this 

 bone is further distin- 

 guished by its curved 

 shaft, and powerful mus- 

 cular crest projecting to- 

 wards the fibula at its 

 upper third. There is a 

 very prominent cnemial 

 crest, which has a deep 

 groove upon its outer side 

 towards the fibula ; this 

 groove is entirely con- 

 cealed from the front. 

 This bone is very different 

 from that assigned to 

 Megalosaurus by Owen.' 



The fibula has a slender, 

 subrounded shaft, but ex- 

 pands proximally and dis- 

 tally upon the tibial side. 



The femur is distin- 

 guished by its marked cur- 

 vature and well-rounded 

 head, by the laterally com- 

 pressed and inferiorly 

 placed great trochanter, 

 by an internal trochanter 

 much more elevated than 

 in the Iguanodontia, and 

 by a large rugose area on 

 the inferior front face of 

 the shaft above the in- 

 ternal condyle. The inner 

 trochanter is broken off in 

 the smaller femur,No. 275. 



' Fossil Reptilia of the Wealden and Purbeck Formations, Pt. Ill, 1857, p. 18, Tab. Ix. 



