236 ANGUIANS. SINCOIDIANS. 



cept that the maxillary teeth are unequal, and terminate in a simple 

 obtuse summit. In the Monodactyle or Anguine Lizard {Lacerta 

 monodactyla, Shaw, Chamcssaurus , d. & b.), these teeth are subcylin- 

 drical and obtusely pointed : like the two preceding genera the palatal 

 teeth are absent. In the heterodactyle Chalcis the maxillary teeth 

 are slightly compressed, straight and divided into two or three obtuse 

 points. Those of the annulated Chalcis are conical and terminate in 

 a simple obtuse summit. In both species the teeth are not implanted 

 in sockets, but are applied to the inner margin of the alveolar ridge. 



The common Zonure {Zonurus griseus,) has about twenty equal, 

 conical, or subcylindrical obtuse teeth, on each side. 



In Tribolonotus and Saurophis the intermaxillary teeth are coni- 

 cal ; the maxillaries straight, subcylindrical and with obtuse summits. 

 These genera are devoid of teeth on the roof of the mouth. 



In the Gerrhosauri the intermaxillary and anterior maxillary teeth 

 are conical as in the Tribolonoti, but the posterior teeth are compressed 

 and terminate in a bilobed summit ; and the Gerrhosaurs further differ 

 in having a row of small conical teeth on each pterygoid bone. 



The Gerrhonoti have the posterior maxillary teeth simply obtuse 

 at the summit, and the pterygoid teeth are in smaller number. 



The teeth in the genus Bipes {Scelotes, Fitzinger), are confined to 

 the jaw-bones, and are conical and simple. The same dentition cha- 

 racterizes the genus Seps : the teeth of the Seps chalcides are very 

 small, their obtuse apex just protrudes above the gum at the anterior 

 part of the mouth ; but they gradually increase in size as they are 

 placed farther back. 



SCINCOIDIANS. 



98. Most of the Scincoid or smooth-scaled lizards have small 

 mouths and slender sharp teeth, fitted apparently for merely insect food. 



In the Tropidophorus the teeth are straight, cylindrical, simple, 

 and slightly compressed at the summit: they are confined to the 

 jaws. In the true Scinks {Scincus, d. & b.) of which the officinal 

 Scink of ancient pharmacy is the type, the palate is also armed ; four 

 or five small obtuse teeth being placed on each pterygoid bone : the 



