18 



MAEIKE EEPTILES OF THE OXFOED CLAY. 



to that of Peloneustes, of which good specimens are described and figured below, this 

 is not of great importance. 



The fore paddle is smaller than the hind, as is usual in this family. The humerus 

 (h.) has a well-developed great tuberosity (tb.), beneath which it widens gradually to 



Test-fiK. 6. 



A. imperfect left hind paddle of PUosaurus ferox (E. 2446) ; B, proximal portion of right fore paddle 



of same species or Peloneustes evansi (E. 2437). {\ nat. size.) 



/., femur, fibula ; fib., fibulare ; 7;., humerus ; int., intermedium ; mt., metatarsal ; r., radius ; t., tibia ; 



tb., tuberosity of humerus ; tib., tibiale ; tr., trochanter of femur : u., ulna. 



the distal expansion, there being no narrowing in the shaft, such as is usual in the 

 Elasmosaurs. The distal end is considerably expanded, more so relatively than it is in 

 the femur. The radius (r.) and ulna («.), which have been figured by Lydekker 



