PLATE 40. 
CHELONIA. 
Fig. ; 
1. Side view of the fore part of the skull of the P/atemys Bowerbankii, nat. size. 
2. Upper view of the same fossil. 
3. Side view of a fractured tympanic bone of a large Turtle (Chelone), from Brackle- 
sham, showing the long and slender ossicle or * columella’ (16) ¿2 situ ; nat. size. 
4. Extremity of the same tympanic bone, to which the *membrana tympani was 
attached. 
. Proximal end of the femur of a very large Chelonian from the Isle of Sheppy, 
Or 
nat. size. 
5. Left femur of a Turtle (Chelone mydas) which weighed 150 lbs., nat size. 
