PLATE XXIII. 
Page 
1. Tomistoma africa^tvin, Andrews; mandible from above, (I a) inner side of 
posterior portion of left ramns, (I b) outer side of posterior portion of 
right ramus : one-fourth nat. size. Qasr-el-Sagha beds (Middle Eocene). 
[Type specimen, C. 10006.] 270 
2. Ditto; cervical vertebra, from side and (2 a) from back: one-half nat. size. 
Same horizon. [R. 3332.] 27o 
o. Tomistoma gavialoides, A\n\xe\v?,-, skull, occipital and (3 a) upper surfaces: 
one-fourth nat. size. Fluvio-marine beds (Upper Eocene). 
[Type specimen, C, 8948.] 267 
(tnfj., angulai’. 
(irt., artii-iilar. 
hoc., basiocfipital. 
facet i’oi’ head of i-ib. 
cimd., occipital condyle. 
(hmt., dentary. 
i.vo., exocci[)ilal. 
frontal. 
Injp., hypapophy.‘<is. 
nix., maxilla. 
na., nasal. 
n.sp., neural spine. 
orb., orbit. 
pa., parietal. 
pnix., premaxilla. 
pr.f., prefrontal. 
<[., quadrate. 
s.amj., suraugular. 
soc., supraoccipital. 
spl., splenial. 
s.t.f., suprateinporal fossa. 
t.f., facet for tubercle of rib, 
