72 REPTILES. 



23. Hagria. Toes 5-4, unequal. 



24. Chiamela. Toes 4-4, unequal. 



*** Body and tail elongate^ suhcylindrical. Legs 4, very short. 

 Toes very short, siihequal or rudimentary. Supernasals 1 pair. 



25. Sen IRA. Toes 5-5, rounded, thick, very short. 



26. Brachymeles. Fore feet very short, with 2 very short toes; 

 hinder tapering, undivided. 



**** Body and tail elongate, suhcylindrical. Legs 2, posterior, or 

 none. Supranasals 2 or 3 pair. 



27. Ophiodes. Legs 2, on side of vent, undivided. 



28. Anguis. Legs none external. 



II. Scales thick, bony, rugose, striated, or 1 or more keeled. Ros- 

 tral I'ounded in front. Body fusiform. Limbs 4, strong. Toes 

 5-5, compressed. 



C. Tail compressed, keeled above. Scales of the tail keeled, spinose, 

 of the body smooth. Head-shields rugose, closely applied to the 

 skull. Temples shielded. Lower eyelid scaly. Preanal plates 

 few, large. 



29. Tribolonotus. Tail with 4 spinose keels above, and spinose 

 on the sides. Preanal plates 2, large. 



30. Tropidophorus. Tail with 4 spinose keels above, smooth on 

 the sides. Preanal plates 3, large, central triangular. 



31. NoRBEA. Tail with 2 close rows of keeled scales above, 

 smooth on the sides. Preanal plates single, square, very large, 



D. Tail rounded, tapering, rarely spinose, not keeled above, thick, 

 bony, rugose, or 3 or 6 keeled, rarely smoothish. 



* Supranasal shields none. 



f Lower eyelid scaly. Toes 5-5. Nostril ivith a curved groove 



behind it. 



§ Toes short, thick, subequal. Scales rugose, unarmed. Orbit with 



a series of plates beneath. 



32. Trachydosaurus. Tail short, thick, depressed, truncated. 

 Body fusiform. Scales very thick, rugose. Ears lobed in 

 front. 



32. Cyclodus. Tail moderate, round, tapering. Body fusiform. 

 Scales moderate, subequal. Ears lobed in front. 



