PLATE «Ly. 
Phosaurus portlandicus. 
Fig. 
1. Inner side view of the bones of the right-hand paddle, 3-8ths nat. size. 
2. Posterior or edge view of ditto, ditto. 
3. Head of the femur, nat. size. 
4. Outline of bones of leg, tarsus, and metatarsus, of Plesiosaurus rugosus, 1-6th 
nat. size. 
The Phosaurus portlandicus is from the Portland Oolite, Isle of Portland, Dorset- 
shire. In the British Museum. 
