330 



ME. E. LYDEKKEE ON BONES OF A 



[Aug. T895, 



and the bone between those of opposite sides being reduced to an 

 exceedingly thin septum, extending upwards to form the floor of 

 the neural canal. Whereas the best-preserved dorsal indicates an 

 animal of the approximate dimensions of Hoplosaurus armatus of 

 the English Wealden, a lumbar and first caudal are fully as large 

 as the corresponding vertebra of the Oxfordian Pelorosaurus Leedsi. 



Fig. 1. — Superior and right later xl aspects of centrum of anterior cervical 

 vertebra o/Bothriospondylus madagascariensis. (About 5 nat. size.) 



Of the three anterior caudal vertebrae preserved, one is also 

 much larger than either of the other two, although it appears to 

 have occupied a nearly similar position in the series. These facts 

 seem to indicate that we have remains of more than a single indi- 

 vidual to deal with, although I cannot satisfy myself that there is 

 any evidence of a specific difference between the specimens. 



Of anterior cervicals there are, as already mentioned, three examples 

 of the centrum, one of which is much larger than the other two. 

 In all the terminal extremities are imperfect. One of the smaller 

 examples is represented in the accompanying illustration (fig. 1). 



In all three specimens the centrum is somewhat narrow and 



