232 REPTILES. 



** Neck simple, 



21. Hatteria. Back and tail crested. Head elongate. Preanal 

 pores numerous. Scales small. 



22. LoPHOGNATHus. Back crested. Head elongate. Preanal 

 pores 2-2. Femoral pores 2-2. 



23. DiPOROPHORA. Back keeled. Head short. Preanal pores 

 1-1. Scales rhombic, of belly larger. 



24. Ampiiibolurus. Back crested, with longitudinal series of 

 larger keeled scales. Femoral pores numerous. 



25. Grammatophora. Back not crested, with cross rows of lar- 

 ger scales. Femoral pores numerous. 



1\. Body depressed. Back ivith imbricate scales. Throat with a 



cross fold. Terrestrial. 



•d. Preanal pores distinct. Femoral pores none. Ears exposed. 



* Preanal and abdominal pores in several rows. 



26. Laudakia. Tail with rhombic keeled scales. Paratoids 

 spinose. 



27. Stellio. Tail with rings of large spinose scales. Paratoids 

 spinose. 



** Preanal pores in a single line. Abdomen poreless. 



28. Agama. Paratoids spinose. Scales rhombic keeled. 



29. Trapelus. Paratoids unarmed. Scales minute. 



b. Preanal and femoral pores none. 



* Ears exposed. Body and limbs ivith large spinose tubercles. 



30. Moloch. Neck with a convex tubercle above. 



** Ears hidden. Scales small^ granular. Back not crested. 



31. Phrynocephalus. Angle of mouth simple. Toes toothed 

 on the sides. 



32. Megalochilus. Angle of mouth fringed. Toes fringed on 

 the sides 



c. Femoral pores distinct. Preanal pores none. Ears exposed. 

 Scales small, granular. Back not crested. 



33. Uromastyx. Tail broad, depressed, with complete rings of 

 spinose scales. 



34. Saara. Tail broad, depressed, with scales of the upper part 

 of the rings spinose, of lower armless. 



35. Leiolepis. Tail round, elongate, tapering, with whorls of 

 smooth scales. 



