CATALOGUE 



LIZARDS. 



Order LACERTILIA. 



" Quadrate bone articulated to the skull ; parts of the ali- and 

 orbito-sphenoid regions flbro-oartilaginous ; rami of the mandible 

 united by suture ; temporal region ■without or with only one hori- 

 zontal bar. Anal cleft transverse. Copulatory organs present, 

 paired." — Ounther, Phil. Trans, clviii. 1867, p. 625. 



Suborder I. LACERTILIA VERA. 



Nasal bones entering the border of the nasal apertures ; pterygoid 

 in contact with quadrate. Clavicle present whenever the limbs are 

 developed. Tongue flattened. 



A. Tongue smooth, or with villose papilla3 ; clavicle dilated, loop- 



shaped proximaUy; no postorbital or postfronto-squamosal 

 arches. 



Fam. 1. Geckonidse. Vertebrae amphicoelian ; parietal bones di- 

 stinct. 



Fam. 2. Eublepliaridae. Vertebrae proccelian ; parietal single. 



B. Tongue smooth or with villose papUlse ; clavicle not dilated 



proximaUy. 



Fam. 3. UroplatidaB. Vertebrae amphicoelian ; interclavicle minute j 

 no postorbital or postfronto-squamosal arches. 



Fajn. 4. Pygopodidae. ISo postorbital or postfronto-squamosal 

 arches ; pre- and postfrontal bones in contact, separating 

 the frontal from the orbit. 



