XII. 



STREPTOSPOND YL US. 



321 



appear to be about twice as long as the latter ; an interesting point 

 in the study of the habits of life of the animal, but by no means 

 peculiar to it. It is somewhat remarkable that the tibia is 19 

 inches long, the femur being so, an approach to equality never 

 observed in the specimens of megalosaurus from Stonesfield. 



Along with these interesting bones, which go far to help to a 

 right understanding of the structure of megalosaurus, and in 

 particular to confirm the inference from the Stonesfield specimens 

 of the greatly reduced anterior limb-bones, occurred as many as 

 thirty-six vertebra?. Of these, nine appear to be cervical. The 

 first and second vertebrae are not seen ; the third is flat in front, 

 concave behind ; those which follow are convex in front and 

 concave behind. Next follow several which are anterior dorsal ; and 



Diagram CXXIV. Anterior Dorsal Vertebra of Streptospondylus Cuvieri. 



Scale four-tenths of nature. 



The left-hand figure shews the anterior aspect ; p is the place of the parapophysis, 

 d of the diapophysis, andz the expanding zygapophysis. The right-hand figure 

 is a side view, shewing the buttress-like structure which supports d, the strongly- 

 marked parapophysial scar p, and the articulations z and sf. 



these are concavo-convex, with the convexity forward as in Strepto- 

 spondylus Cuvieri of Honfleur, to which indeed they offer the closest 

 accordance, while no such vertebra have been recorded from Stones- 

 field. 



