214 



REPTILIA 



Pelagosaurus, Bronn (Fig. 313). Like the preceding, but much smaller, 

 the snout tapering more gradually, and orbits laterally directed. Antorbital 

 vacuity much reduced or absent ; suborbital vacuity in the palate large ; 

 posterior narial opening of pyriform outline. P. typus, Bronn, about 1 m. in 

 length j some species 2 m. Upper Lias of Southern Germany and France. 



Steneosaurits, Geoff. [Sericodon, v. Meyer). Differs from Mystriosaurus in 

 having the posterior narial opening rounded, palatines more expanded, and 

 frontal small. Upper Lias to Kimmeridgian. 



Teleosaurus, Geoff. (Figs. 314, 315). Skull much elongated and narrow; 

 snout flattened, thin, with rectilinear edges ; teeth curved outwards ; orbits 



Telco!:aiirns cadomcnsis, Cuvier sp. Bathoiiian ; Noniiaiidy. 

 Portion of dorsal (.1), and ventral (JS) armour (restored after E. Deslongcliamps). 



circular, superiorly directed. Dorsal scutes longitudinally keeled in sacral and 

 caudal regions : ventral armour extending between the liml) girdles. Lower, 

 Middle, and Upper Jura. T. cadomensis, Geoff. 



Aeolodon, v. Meyer ; Crocodikirmis, Jourdan ; Teleidosaurits, Deslong. Upper 

 Jura. 



Familj' 2. Metriorhynchidae. Zittel. {Thalattosuchia, Fraas.) 



Orhifs entirely enclosed, elongated, laterally placed, with sclerotic ring. Pre- 

 frontals large; nasals broad, widening the snout region posteriorly; lachrymals 



