353 Scientific Proceedings^ Rojjal DMin Society . 



Femur. 



The only constant difference between the femur of L. mriahilis and that 

 of L. eurojmus is that, in the former, the shaft is proportionally more slender 

 than in the latter. 



Besides the femora of the fossil skeleton in the Corner and Kennard 

 collection, I have many others before me from Ightham, including the one 

 figured by Newton.' Although they vary a good deal in form, they all show 

 the slender shaft of X. variabilis. The femur of L. v. hiberincus is a little 

 stouter, relatively, than that of L. v. scoticus, and, as the measurements 

 show, the fossil femora agree in this with the former sub-species. Tliey are 

 distinguished only by their larger size. 



1 Newton, Quart. Journ. Geol. Soc, vol. 1., pi. xi., fig. 4. 



