LIZARDS. 45 



** Sides tvith a distinct longitudinal fold, covered tvith small 

 granular scales. Back luith large squarish shields. 



Fam. V. CoRDYLEs, (Zonurid^). 



Head pyramidal or depressed, covered with regular many-sided 

 shields. Tongue flat, nicked at the tip. Scales of the hack and 

 tail large, rhombic. Sides with a distinct longitudinal fold, co- 

 vered with small granular scales. Ears distinct. Eyes with 2 

 valvular lids. Limbs 4, strong, or rarely entirely wanting or hid 

 under the skin. 



A. Femoral pores distinct. Nasal shield without any or only one 

 pair of supra nasals. Legs 4. Occipital shields few. Old World. 



a. Tail spinose. Head depressed. Fronto-parietal and parietal 

 plates forming a large square. Tongue velvet-like. Collar none, 

 ivith a slight cross fold on the side of the neck. Femoral pores 

 numerous. 



1. CoRDYi.us. Scales of back and sides square, in close cross se- 

 ries. Lower eyelid transparent. Nasal small : supra-nasals 

 square, contiguous. 



2., ZoNURus. Scales of back and sides square, keeled, in close 

 cross series. Lower eyelid opaque. Nasal triangular : supra- 

 nasal none. 



3. Hemicordylus. Scales of back small, square, in cross rows; 



of the sides granular. Nasal triangular : supranasal none. 



4. PsEUDOcoRDYLUs. Scalcs of the back suboval, in cross rows, 

 surrounded with granules, with a fold on each side of the neck. 

 Nasal triangular : supranasal none. 



b. Tail unaiined. Head pyramidical. Tongue scaly. Supra- 



nasal none. 



5. Platysaurus. Toes 5-5. Head depressed. Fronto-nasals 2, 



fronto-parietals and parietals distinct, equal. Body fusiform. 



6. CiciGNA. Toes 5-5. Head square. Fronto-nasals 2, fronto- 

 parietal and parietal united on each side. Body fusiform. 



7. Gerrhosaurus. Toes 5-5. Head square. Fronto-nasals 2, 

 fronto-parietals and parietals distinct, equal. Body fusiform. 



8. Pleurostrichus. Toes 5-5. Head square. Fronto-nasals 



none, fronto-parietal and parietals equal. Body and tail elon- 

 gate. 



9. Saurophis. Toes 4-4, very short. Body and tail elongate. 



