Fig. 
. Under view of the lower jaw of a turtle (Chelone), nat. size. (Hordwell Cliff). 
PLATE 33. 
. Upper view of the same specimen. 
Upper view of the fourth cervical vertebra of a 7rionye; d, diapophysis. Nat. 
size. 
. Side view of the same specimen (Hordwell Cliff). 
. The left os pubis of a Trionyæ, nat. size (Hordwell Cliff). 
. Part of the plastron of Trionye planus, half the nat. size; As, hyosternal; 
ps, hyposternal. 
. Right hyposternal of a Zrionye, from Bracklesham, half the nat. size. (Im the 
Collection of Frederick Dixon, Esg., F.G.S.) 
