PROCEEDINGS OF SCIENTIFIC SOCIETIES. 507 
minations of the opisthotic bone in e various orders of oA aah recti- 
der Fig g. 
roótic 
as in Clidastes. The desiit ee of the ear bones in the 
Fig. 107.¢ same groups 
g was then des- 
So 
a ae cribed, and the 
ô am 
Pter «9 — 
D j— À— 
PAR eX 
is postero- 
interior to the didis: and below the opisthotic. He ‘ai not found it 
Fig. 106 m cranium; posterior view. Lettering the same as in 105 with the 
i addition O bono 
Ex, p; Base T Stap.. ` Suprastapedial or hyomandibular. 
p. O. oceipt Lettering 
Fie 7107. Suprecceipital. frontosus (from Cape Colony); profile. y credendi 
with the following additions 
tvi 
om., ONES Col..... Columella. 
sev. B Ectp.. . Ectopterygoid, 
- x Iovem Subart. . Subarticilar. 
Pter. ., Pterygoid. 
