jMancJicstcr Memoirs, Vol. Iv. (191 1), No. IT. 7 



Plesiosanrns victor loetween the first metacarpal and the 

 first distal carpal. 



The most marked features of the limb are the extra- 

 ordinary width of the carpus compared with the hand and 

 the close fit of all the constituent bones. 



Fiq. 3. Fore paddle of P/esiosaiirns niacro- 

 cephalus. x ?.. L. 9766. Manchester 

 Museum. To shew the apparent remains 

 of the skin indicating the former existence 

 of a posterior extension of the fin un- 

 supported by bone. 



This disproportionate width of the carpus raises the 

 suspicion that the hand had in life a considerable posterior 

 extension supported by non-calcified tissues. The 

 existence of such an expansion will explain the great 



